TY - BOOK AU - De Waard, P.W.F. TI - Foliar diagnosis nutrition yield stability of black pepper (Piper Nigrum L.) Sarawak T2 - Communication U1 - 633.84 21st ed. PY - 1969/// CY - Amsterdam PB - Department of Agriucltural Research KW - Cultivation KW - Nutrition KW - Pepper (Spice) ER -