na INLIS000000000000517 0010-1020000319 A Handbook for weed control in rice by Kwesi Ampong-Nyarko; S.K. De Datta International Rice Research Institute Manila Manila International Rice Research Institute 1991 113 p.: ill.; 28 cm. 971-22-0020-5 REF.633.18-251 REF.633.18-251 PADI PENGENDALIAN GULMA. 526 526