TY - BOOK AU - Sanjivareddi Y.B. AU - P.V. Patil Department of Plant Pathology TI - Investigations on powdery mildew (erysiphe cichoracearum dc. f.sp. helianthi jacz.) of sunflower in northern dry zone of Karnata U1 - 630 PY - 2012/// CY - Dharwad PB - University of Agricultural Sciences ER -