U. K. ROY CHOUDHURY, A. K. CHATTOPADHYAY, B. N. BAGCHI AND. 2002. “Reaction of Some Cultures of Rapeseed-Mustard Against Club Root Disease”. Indian Phytopathology 44 (2): 238-39. http://epubs.icar.org.in/index.php/IPPJ/article/view/22074.