TY - BK AU - Schumann,G.L. TI - Plant diseases: Their biology and social impact SN - 0-89054-116-7 U1 - 581.2 PY - 1991/// CY - St. Paul, MN (USA) PB - APS, KW - Bacteria KW - Famine KW - Fungi KW - AGROVOC KW - Genes KW - Genetic engineering KW - Parasitic plants KW - Pesticides KW - Plant diseases KW - Plant pathology KW - Potatoes KW - Quarantine KW - Rhizosphere KW - Rusts KW - Soilborne organisms KW - Toxic substances KW - Viruses N1 - Illustrations, tables, graphs, maps, glossary p. 361-374, figure credits p. 375-383, index p. 385-397 ER -