1223
1903
1390
Allen, Shirley Walter
3881-
Conserving natural resources; principles and practice in a democracy
New York
McGraw-Hill
]1966[
vii, 432p.: ill, maps
Includes bibliographical references
]by[ Shirley Walter Allen ]and[ Justin Wilkinson Leonard
3rd ed.
United States ، Natural resources
HC
103
.
7
.
A7
1966
AU
AU Leonard, Justin Wilkinson, joint author
TI
CL.نوجی
CL
CL.نوجی
