IRRI. (1980). Soil - related constraints to food production in the tropics. Philippines: IRRI.
Chicago-stil citatIRRI. Soil - Related Constraints to Food Production in the Tropics. Philippines: IRRI, 1980.
MLA-referensIRRI. Soil - Related Constraints to Food Production in the Tropics. Philippines: IRRI, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.