Gaya APA
Moldenhauer, M., Hudson, N. (1988).
Conservation Farming on Steep Lands .
Lowa:
The Soil and Water Conservation Society.
Gaya MLA
Moldenhauer, M.C.., Hudson, N.W..
"Conservation Farming on Steep Lands".
Lowa:
The Soil and Water Conservation Society,
1988.
Text.