Allen, Shirley Walter
Conserving natural resources : Principles and practice in democracy Shirley Walter Allen, Justin Wilkinson Leonard - 3rd ed. - New York: McGraw-Hill Book Company, 1955. - vii, 432 p. :
333.7 / ALL
Conserving natural resources : Principles and practice in democracy Shirley Walter Allen, Justin Wilkinson Leonard - 3rd ed. - New York: McGraw-Hill Book Company, 1955. - vii, 432 p. :
333.7 / ALL