Download or read book Proceedings of The Academy of Natural Sciences Vol 123 1971 written by and published by Academy of Natural Sciences. This book was released on with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Synonymic Catalogue of Grasshoppers and Their Allies of the World written by Xiangchu Yin and published by . This book was released on 1996 with total page 1328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Catalogue of Scientific Literature written by and published by . This book was released on 1908 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Zoological Record written by and published by . This book was released on 1908 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalogue de la biblioth que 1904 1912 1915 written by Teylers Museum. Bibliotheek and published by . This book was released on 1915 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1946 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Grasshoppers and Grassland Health written by Jeffrey A. Lockwood and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acridids (grasshoppers and locusts) can range from being rare curiosities to abundant menaces. Some are threatened with extinction and become subjects of intensive conservation efforts, while others are devastating pests and become the objects of massive control programmes. Even within a species, there are times when the animal is so abundant that its crushed masses cause the wheels of trains to skid (the Rocky Mountain grasshopper, Melanoplus spretus Walsh in western North America in the 1860s and I 870s), while at other times the animal is alarmingly scarce (the Rocky Mountain grasshopper went extinct in the early 1900s). Why are there these extremes in one insect family, and even in a single species? The NATO workshop examined this paradox and its implications for Environmental Security, which must address both the elements of land use (agricultural production and pest management) and conservation of biodiversity. The reconciliation of these objectives clearly demands a critical assessment of current knowledge and policies, identification of future research, and close working relationships among scientists. Insects can present two clear faces, as well as the intervening gradation. These extremes require us to respond in two ways: conservation of scarce species and suppression of abundant (harmful) species. But perhaps most important, these opposite poles also provide the opportunity for an exchange of information and insight.

Download or read book Zoological Record written by and published by . This book was released on 1908 with total page 1402 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Zoological Record is published annually in separate sections. The first of these is Comprehensive Zoology, followed by sections recording a year's literature relating to a Phylum or Class of the Animal Kingdom. The final section contains the new genera and subgenera indexed in the volume." Each section of a volume lists the sections of that volume.

Download or read book The Journal of Economic Biology written by and published by . This book was released on 1906 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Record of Zoological Literature written by and published by . This book was released on 1924 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Catalogue of Scientific Literature 1901 1914 written by and published by . This book was released on 1907 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by United States National Museum and published by . This book was released on 1947 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the United States National Museum written by United States National Museum and published by . This book was released on 1946 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Notes on South American Grasshoppers of the Subfamily Acridinae Acrididae written by James Abram Garfield Rehn and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of The Academy of Natural Sciences Vol 121 1969 written by and published by Academy of Natural Sciences. This book was released on with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of The Academy of Natural Sciences Vol 131 1979 written by and published by Academy of Natural Sciences. This book was released on with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: