Download or read book Indice di periodici scientifici e tecnici written by and published by . This book was released on 1951 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General catalogue of printed books written by British museum. Dept. of printed books and published by . This book was released on 1931 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Catalogue of Printed Books written by British Museum. Department of Printed Books and published by . This book was released on 1962 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Reference Books written by Constance Mabel Winchell and published by . This book was released on 1950 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Reference Books written by and published by . This book was released on 1954 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World List of Scientific Periodicals Published in the Years 1900 1960 written by and published by . This book was released on 1963 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Reference Books written by ALA. and published by . This book was released on 1954 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guide to Reference Books Seventh Edition written by Constance Mabel Winchell and published by . This book was released on 1954 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The British Library General Catalogue of Printed Books to 1975 written by British Library and published by . This book was released on 1982 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Stechert Hafner Book News written by and published by . This book was released on 1948 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapports written by and published by . This book was released on 1951 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dictionary Catalog of the Research Libraries of the New York Public Library 1911 1971 written by New York Public Library. Research Libraries and published by . This book was released on 1979 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Agriculture and Soil Conservation written by Mirko Castellini and published by Mdpi AG. This book was released on 2021-12-27 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil degradation is one of the most topical environmental threats. A number of processes causing soil degradation, specifically erosion, compaction, salinization, pollution, and loss of both organic matter and soil biodiversity, are also strictly connected to agricultural activity and its intensification. The development and adoption of sustainable agronomic practices able to preserve and enhance the physical, chemical, and biological properties of soils and improve agroecosystem functions is a challenge for both scientists and farmers. The Special Issue entitled "Sustainable Agriculture and Soil Conservation" collects 12 original contributions addressing the state of the art of sustainable agriculture and soil conservation. The papers cover a wide range of topics, including organic agriculture, soil amendment and soil organic carbon (SOC) management, the impact of SOC on soil water repellency, the effects of soil tillage on the quantity of SOC associated with several fractions of soil particles and depth, and SOC prediction, using visible and near-infrared spectra and multivariate modeling. Moreover, the effects of some soil contaminants (e.g., crude oil, tungsten, copper, and polycyclic aromatic hydrocarbons) are discussed or reviewed in light of the recent literature. The collection of the manuscripts presented in this Special Issue provides a relevant knowledge contribution for improving our understanding on sustainable agriculture and soil conservation, thus stimulating new views on this main topic.
Download or read book Plant Genetic Conservation written by Nigel Maxted and published by Springer Science & Business Media. This book was released on 1997-01-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent development of ideas on biodiversity conservation was already being considered almost three-quarters of a century ago for crop plants and the wild species related to them, by the Russian geneticist N.!. Vavilov. He was undoubtedly the first scientist to understand the impor tance for humankind of conserving for utilization the genetic diversity of our ancient crop plants and their wild relatives from their centres of diversity. His collections showed various traits of adaptation to environ mental extremes and biotypes of crop diseases and pests which were unknown to most plant breeders in the first quarter of the twentieth cen tury. Later, in the 1940s-1960s scientists began to realize that the pool of genetic diversity known to Vavilov and his colleagues was beginning to disappear. Through the replacement of the old, primitive and highly diverse land races by uniform modem varieties created by plant breed ers, the crop gene pool was being eroded. The genetic diversity of wild species was equally being threatened by human activities: over-exploita tion, habitat destruction or fragmentation, competition resulting from the introduction of alien species or varieties, changes and intensification of land use, environmental pollution and possible climate change.
Download or read book The Conservation of Plant Biodiversity written by Otto Herzberg Frankel and published by Cambridge University Press. This book was released on 1995-09-21 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the various options for conserving plants at the level of the gene, species and community.
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