Proceedings - Annual meetings (1974: november, Chicago, Illinois, Estados Unidos); Usherwood, Noble R.; Doll, Eugene C.; Divisions S-4, S-8, A-4, and A-6 of the American Society of Agronomy; Soil Science Society of America (Wisconsin, Estados Unidos : American Society of Agronomy ; Soil Science Society of America, Inc., 1975)
ASA Special Publication Number 25: International and National Outlook. The necessity for efficient nutrient utilization
AGRI
Keywords: Calidad de los cultivos; Fertilizantes mundiales; Abastecimiento de alimentos; Suministros de nitrógeno; Política de fertilizantes; Libros electrónicos