Gaya APA
PURNOMO, E. (1989).
NUTRIENT MANAGEMENT FOR FOOD CROP PRODUCTION IN TROPICAL FARMING SYSTEMS .
Netherlands:
INSTITUTE FOR SOIL FERLITY.
Gaya MLA
PURNOMO, ERRY.
"NUTRIENT MANAGEMENT FOR FOOD CROP PRODUCTION IN TROPICAL FARMING SYSTEMS".
Netherlands:
INSTITUTE FOR SOIL FERLITY,
1989.
Text.