Download or read book Ecological Research Series written by and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Series written by American Geographical Society of New York and published by . This book was released on 1924 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Research Series written by Bowdoin College. Bureau for Research in Municipal Government and published by . This book was released on 1918 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Food Security And Farm Land Protection In China written by Yushi Mao and published by World Scientific. This book was released on 2012-12-31 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of publishing this book is to let the general public have a better understanding of the food security situation in China and better comprehension of the merit of allocating land through market mechanism. In addition, it makes the public aware of the inefficiencies of current government regulated land system.As a populous country in the world, China emphasizes too much importance of food to ensure people's sufficient consumption. There is a national policy to protect farm land, farm land protection refers to 18 hundred million mu of farmland which is specifically designated for food production only. Unirule defined the national food security as the capability to solve food shortages, and calculated the gap between food supply and demand. Two approaches can be used to solve the above food gap. Food security problems will not happen under situations of free trade and factors substitution in market economy, substantial storage and foreign exchange income. In modern China, food insecurity or great famine only happened in planned economy. To link tightly farm land size and grain yield and even food security is baseless both in theory and practices. The previous red line of 21 hundred million mu was already broken through. The current red line of 18 hundred million mu will also be broken through, in view of the process of industrialization and urbanization. In fact, farm land protection should focus on protecting the employment right of peasant in land.
Download or read book American Geographical Society Research Series written by American Geographical Society of New York and published by . This book was released on 1923 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1979 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Pacific Science Congress written by and published by . This book was released on 1959 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Geomorphology written by Andrew Goudie and published by Routledge. This book was released on 2013-04-15 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume editor is the leading authority in the field Alphabetically organized in two volumes c.700 comprehensively signed, cross-referenced and indexed entries Detailed bibliographies and suggestions for further reading follow most entries Fully illustrated: over 300 plates and line drawings Written by an editorial team of over 270 experts from over thirty countries
Download or read book Serials Currently Received by the National Agricultural Library a Keyword Index written by National Agricultural Library (U.S.) and published by . This book was released on 1974 with total page 1338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alkaline Rocks and Carbonatites of the World Part 4 written by A.R. Woolley and published by Geological Society of London. This book was released on 2019-09-02 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The alkaline igneous rocks and carbonatites are compositionally and mineralogically the most diverse of all igneous rocks and, apart from their scientific interest, are of major, and growing, economic importance. They are important repositories of certain metals and commodities, indeed the only significant sources of some of them, and include Nb, the rare earths, Cu, V, diamond, phosphate, vermiculite, bauxite, raw materials for the manufacture of ceramics, and potentially Th and U. The economic potential of these rocks is now widely appreciated, particularly since the commencement of the mining of the Palabora carbonatite for copper and a host of valuable by-products. Similarly, the crucial economic dominance of rare earth production from carbonatite-related occurrences in China, has stimulated the world-wide hunt for similar deposits. This volume describes and provides ready access to the literature for all known occurrences of alkaline igneous rocks and carbonatites of Antarctica, Asia and Europe excluding the former USSR, Australasia and oceanic islands. More than 1,200 occurrences from 59 countries are outlined together with those of 57 oceanic islands and island groups. The descriptions include geographical coordinates and information on general geology, rock types, petrography, mineralogy, age and economic aspects with the principal references cited. There are 429 geological and distribution maps and a locality index. As has been demonstrated by the three earlier volumes, the present book is likely to be of considerable interest to mineral exploration companies, as there are no comprehensive published reviews of the economic aspects of the alkaline rocks. It will also interest research scientists in the fields of igneous petrology and volcanology, and geologists concerned with the regional distribution of igneous rocks and their geodynamic relationships.
Download or read book Permian Triassic Pangean Basins and Foldbelts Along the Panthalassan Margin of Gondwanaland written by J. J. Veevers and published by Geological Society of America. This book was released on 1994-01-01 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume summarizes the current state of knowledge of each of the main sectors of the basin. After reconstructing Permian-Triassic Gondwanaland, authors from South America, South Africa, Antarctica, and Australia illustrate the relevant geology of each sector in maps and time-space diagrams under
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1980 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Area Development Bulletin written by and published by . This book was released on 1955-02 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Area Redevelopment Bulletin written by and published by . This book was released on 1959 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1982 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliograf a de pastos y forrajes tropicales written by and published by IICA Biblioteca Venezuela. This book was released on with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Serials Currently Received by the National Agricultural Library 1975 written by National Agricultural Library (U.S.) and published by . This book was released on 1976 with total page 1392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
