TY - BOOK AU - Singh, R S TI - Introduction to principles of plant pathology SN - 8120415515 U1 - 632 PY - 2002/// CY - New Delhi PB - Oxford and IBH Publishing Co Pvt Ltd KW - History of Plant Pathology KW - Causes of Plant Diseases KW - Symptoms and Identification of Plant Diseases KW - Pathogenesis KW - Epidemiology ER -