Md. Safawat Hossain Biology, development and factors affecting the survival of five selected weeds from paddy fields / oleh Md. Safawat Hossain - Bangi : Universiti Kebangsaan Malaysia, 1987 - 159 p. : ill. ; 30 cm. Thesis (M. A.) - Universiti Kebangsaan Malaysia, 1987 Bibliography : p. 143-152 Subjects--Topical Terms: Rice--Diseases and pests