TY  - BOOK
T1  - Guidelines for modern resource management soil, land, water, air
A1  - Greenland, David 1940-
LA  - English
PP  - Columbus, Ohio
PB  - Merrill
YR  - 1983
UL  - https://tuklas.up.edu.ph/Record/UP-99796217602236906
OP  - 224
CN  - S 938 G74
KW  - Conservation of natural resources.
KW  - Conservation of natural resources : United States.
KW  - Environmental protection : United States.
KW  - Environmental protection.
ER  -