measurement of yields from terraced and non-terraced fields, 1987/88 Koinei, P. K. creator text Nairobi Ministry of Agriculture, Agriculture Engineering Division, Soil & Water Conservation Branch [between 1988 and 1991] monographic 15 leaves : ill., maps ; 30 cm. by P.K. Koinei. Includes bibliographical references. f-ke--- Food crops Yields Kenya Taita Taveta District Terracing Kenya Taita Taveta District SB298.5 .T34 1988 91980775 UOEL 000 20170713115943.0 000