TY  - BOOK
AU  - Zon,Raphael
ED  - University of Pennsylvania.
TI  - Conservation of renewable natural resources: some fundamental aspects of the problem
T2  - Morris Arboretum monographs, 2
AV  - S942 .P45 1969
U1  - 333.7/2/0973 
PY  - 1969///, c1941]
CY  - Port Washington
PB  - Kennikat Press
KW  - Conservation of natural resources
KW  - United States
KW  - Local
KW  - Ozone
KW  - Physiological effect
KW  - Botany
KW  - Climate
N1  - Includes bibliographies
ER  -