Download or read book International Social Science Journal written by and published by . This book was released on 1993 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Labour Documentation written by and published by . This book was released on 1991 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aanwinsten van de Centrale Bibliotheek Queteletfonds written by Bibliothèque centrale (Fonds Quetelet) and published by . This book was released on 1989 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts on Tropical Agriculture written by and published by . This book was released on 1993 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Science Policies in Africa written by Unesco and published by . This book was released on 1974 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estudios Y Documentos de Pol tica Cient fica written by Unesco and published by . This book was released on 1976 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book European Scientific Co operation written by Unesco and published by . This book was released on 1972 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agrindex written by and published by . This book was released on 1994 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unesco List of Documents and Publications written by Unesco and published by . This book was released on 1984 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forestry and the Forest Industries Past and Future written by E.G. Richards and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: In analysing the development and achievements of Polish forestry and forest industries over the last four decades, it is necessary to take into consideration the situation prevailing after the end of the Second World War, when these sectors of the national economy were starting their activities. First of all, it is necessary to consider the effects of the war such as: (a) the harvesting from the forests of the present Polish territory of 3 about 200 million m of merchantable wood, which is equal to the normal harvest over a l2-year period; (b) the destruction of over half the woodworking industrial potential. In consequence, the forested area inside the new Polish boundaries amounted 40 years ago only to 20.8 per cent of the whole area of the country. There has been a continuing process of increasing the forested area of the country (although at a diminishing rate). In 1986 the forest area amounted to 27.7 per cent of the land surface, that is to 8.7 million ha, an increase of over 2 million ha in 40 years. Intensive afforestation, performed regardless of the ownership category of the land by the State forest service, was aimed primarily at making good the losses in the forested area and the rational use of land not fit for agricultural purposes.

Download or read book Agroforestry Parklands in Sub Saharan Africa written by Jean-Marc Boffa and published by Food & Agriculture Org.. This book was released on 1999 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document attempts to present the current state of knowledge on agroforestry parkland systems. These systems, which for many local populations are very important for food security, income generation and environmental protection, are found primarily in the semi-arid and sub-humid zones of West Africa. The document first provides a thorough description of their distribution and diversity and discusses different ways of classifying them. It also presents data on current trends in parkland development and assesses determining factors. The document then provides an in-depth analysis of biophysical tree-soil-crop interactions and the factors regulating them, and describes various improved parkland management techniques. It goes on to examine the strength and limitations of institutional arrangements as well as the constraints imposed by Sahelian forest policies on the sustainable management of parklands. The production, use and marketing of parkland products is reviewed with an emphasis on their contribution to food security, local and national income as well as social values. Overall costs and benefits of the practice of parkland agroforestry are evaluated. In conclusion, the document identifies crucial research needs and promising avenues for promoting sustainable management of parkland systems.

Download or read book Biblio flash written by and published by . This book was released on 1988 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1987 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Counsellor written by and published by . This book was released on 1980 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book TSI written by and published by . This book was released on 1982 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Culture 2030 indicators written by UNESCO and published by UNESCO Publishing. This book was released on 2019-11-18 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book tudes et documents de politique scientifique written by Unesco and published by . This book was released on 1975 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: