Smith, J.
Production risk and optimal fertilizer rates : an application of the random coefficent model / J. Smith and G. Umali. - Manila : International Rice Research Institute, 1985. - 13 p. : ill. ; 28 cm. - IRRI research paper series ; no. 115 .
Cover title.
Fertilizers.
Rice--Fertilizers--Mathematical models.
Crop yields--Mathematical models.
Production risk and optimal fertilizer rates : an application of the random coefficent model / J. Smith and G. Umali. - Manila : International Rice Research Institute, 1985. - 13 p. : ill. ; 28 cm. - IRRI research paper series ; no. 115 .
Cover title.
Fertilizers.
Rice--Fertilizers--Mathematical models.
Crop yields--Mathematical models.