Nyarko, Kwesi Ampong A Handbook for weed control in rice / Kwesi Among-Nyarko and S. K. De Datta. - College Laguna : IRRI, 1991. - 113 pages : illustrations ; 28 cm Bibliography : p. 104 - 105. ISBN: 9712200205 Subjects--Topical Terms: Weed control LC Class. No.: SB608 / R5N98 1991