TY - BOOK AU - Nyvall,Robert F. TI - Field crop diseases handbook T2 - AVI sourcebook and handbook series SN - 0870553364 AV - SB731 .N94 U1 - 633/.08/9 PY - 1979/// CY - Westport, Conn. PB - AVI Publishing Company KW - Field crops KW - Diseases and pests KW - Handbooks, manuals, etc KW - Phytopathogenic microorganisms KW - Control KW - Plant diseases N1 - Includes bibliographies and index ER -