Kipps, M. S.

Production of field crops ; a textbook of agronomy - 6 ed. - New York : McGraw-Hill, 1970 - 790 p. : ilus. ; mapas - McGraw-Hill publications in the agricultural sciences . - McGraw-Hill publications in the agricultural sciences .

27840


Cultivos.
Cultivos--Rendimiento.

631.5 / K5 1970