Lal, Shrestha Gyan Analysis of brown planthopper (biotype 1) resistance gene (bph 1) in rice plant (oryza sativa l.) / by Shrestha Gyan Lal - Seoul : Seoul National University, 1981 - 57 p. ; 26 cm. Thesis (M.A.) - Seoul National University, 1981 Subjects--Topical Terms: Rice--Diseases and pests