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141
Conservation and agriculture /
Published 1978

Conference Proceeding Book
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144
Pioneer conservationists of eastern America /
by Wild, Peter
Published 1986

Book
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145
Conservation in Canada : a conspectus /
Published 1974

Book
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149
Cooperation in the European mountains
Published 1999

Book
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150
Kaiāulu : gathering tides /
by Vaughan, Mehana Blaich
Published 2018

Book
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151
The Murray waters : man, nature, and a river system, proceedings of a symposium /
Published 1974

Book
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152
Conservation of natural resources in the United States : a selected list of recent references /
Published 1942

Government Document Book
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154
The American environment : readings in the history of conservation /
by Nash, Roderick
Published 1976

Book
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157
Conservation of natural resources : a resource management approach /
by Castillon, David A.
Published 1992

Book
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158
Saving the earth as a career : advice on becoming a conservation professional /
by Hunter, Malcolm L.
Published 2007

Book
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159
Guidelines for modern resource management : soil, land, water, air /
by Greenland, David, 1940-
Published 1983

Book
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160
The quiet crisis and the next generation /
by Udall, Stewart L.
Published 1988

Book
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