Hart, Sylvia The rice weeder : a socio-economic study / Sylvia Hart & Alastair Orr - Dhaka : Bangladesh Rice Research Institute (BRRI) 1990 - 19p. : ill. ; 30 cm. - Research report No. 8 . Includes bibliographical references. Subjects--Topical Terms: Weeds--BangladeshRice Gov. Doc. Class. No.: BAN BRRI RR-8