Colville National Forest/ Idaho Panhandle National Forest (N.F), Douglas Fir Beetle Project
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Page : 568 pages
File Size : 26,9 MB
Release : 1999
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Author :
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Page : 568 pages
File Size : 26,9 MB
Release : 1999
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Page : 680 pages
File Size : 41,62 MB
Release : 1956
Category : Union catalogs
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Includes entries for maps and atlases
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Page : 712 pages
File Size : 42,83 MB
Release : 1964
Category : American literature
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Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of the Interior and Related Agencies
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Page : 816 pages
File Size : 32,98 MB
Release : 1989
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Author : United States. Department of Health, Education, and Welfare
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Page : 116 pages
File Size : 10,89 MB
Release : 1977-08
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Author : Terry L. West
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Page : 84 pages
File Size : 37,35 MB
Release : 1992
Category : Forest reserves
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Author : Gerald E. Ray
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Page : 328 pages
File Size : 13,42 MB
Release : 1997
Category : Science
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Skarns in British Columbia have historically been important sources of iron, tungsten, copper, and gold. This publication begins with an introduction on skarn terminology and the problems of skarn identification. It then reviews a genetic model of skarn formation and presents descriptive profiles of eight types of skarn deposits; describes the database of at least 735 skarn occurrences in the province, and the number and distribution of skarns in British Columbia according to their associations, class, age, and distribution; and notes the ages of British Columbia skarns and the total production of various metals extracted from British Columbia skarns. Subsequent sections provide information on assays and metal ratios of mineralized skarns, skarn mineralogy, skarn mineral chemistry, chemistry of skarn-related intrusions, and the mapping and evaluation of skarns. The appendix contains a listing of 735 skarn occurrences in British Columbia, giving deposit name, MINFILE number, latitude/longitude, elements and minerals present, and associated rocks and their ages.
Author : Roger A. Sedjo
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Page : 40 pages
File Size : 38,35 MB
Release : 2001
Category : Forest management
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Addresses the future of the United States Forest Service. Cf. To the reader, p. [iv].
Author : United States Forest Service
Publisher : Legare Street Press
Page : 0 pages
File Size : 36,13 MB
Release : 2023-07-18
Category : History
ISBN : 9781020409301
Published in 1878, this report presents a comprehensive survey of the state of forestry in the United States at the time. It includes discussions of the economic, environmental, and recreational merits of forests, as well as recommendations for their management and conservation. The report features numerous charts, tables, and maps, and provides a valuable historical perspective on the development of American forestry policy. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
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Page : 68 pages
File Size : 39,49 MB
Release : 1974
Category : Stanislaus National Forest (Calif.)
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