Conserving natural resources : principles and practice in a democracy /
Allen, Shirley Walter.
Conserving natural resources : principles and practice in a democracy / Shirley Walter, 1883 Allen ; Justin Wilkinson Leonard. - 2nd. ed. - ix, 370 pages : illustrations, maps ; 24 cm.
Includes bibliographical references.
Conservation of natural resources--United States.
Natural resources--United States.
HC103.7 / .A454 1959
Conserving natural resources : principles and practice in a democracy / Shirley Walter, 1883 Allen ; Justin Wilkinson Leonard. - 2nd. ed. - ix, 370 pages : illustrations, maps ; 24 cm.
Includes bibliographical references.
Conservation of natural resources--United States.
Natural resources--United States.
HC103.7 / .A454 1959
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