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The physical and biological factors affecting maintenance and management of pinyon-juniper type species of the West

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By: Betton, Harold B. - United States. Bureau of Land Management. - United States. Bureau of Land Management. Division of Forestry.

Publication info: [Washington, D.C.?], U.S. Department of the Interior, Bureau of Land Management, [1972]

Holding Institution: Bureau of Land Management
Physical and biological factors affecting the maintenance and management of the giant (saguaro) cactus, Cereus giganteus, Englem [i.e. Engelm]

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By: Betton, Harold B. - United States. Bureau of Land Management. - United States. Bureau of Land Management. - United States. Bureau of Land Management. Division of Forestry.

Publication info: Washington, D.C, The Bureau, [1972]

Holding Institution: Bureau of Land Management