TY - BOOK AU - Dickson, James G. TI - Diseases of field crops T2 - Mc Graw-Hill, Publications in the Agricultural Sciences U1 - 632:633 J6 PY - 1956/// CY - Bombay PB - TATA Mc Graw-Hill KW - James G.Dickson KW - Field crops-Diseases and pests ER -