Singh, S.N.Kumar, Ashwini2020-12-152020-12-152018https://krishikosh.egranth.ac.in/handle/1/5810156696EnglishInvestigation on variability in Alternaria brassicae (Berk.) Sacc. incitant of blight of mustard [Brassica juncea (L.) Czern & Coss.]Thesis