advances in nutrient management research Ladha, J. K. text Los Banos, Philippines International Rice Research Institute 1998 monographic vi, 304 p. : ill. ; 23 cm Papers presented at a symposium, "International Workshop on Nutrient Research in Rainfed Lowlands,12-15 October 1998 in Ubon" -- p. v Rainfed lowland rice 633 INT 1998 A051 Or. 9712201171