International Rice Research Institute -- USAID grant no. LAG-4200-G-00-2030-00 -- effects of continuous irrigated rice croppings on the chemical composition of soil organic matter, soil N supplying capacity, and the yield decline phenomenon : final program performance report -- 16 December 1992 to 30 December 1994
Sign inINTERNATIONAL RICE RESEARCH INSTITUTE (IRRI)
1994

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USAID DEC