TY - BK AU - Heitefuss,R. TI - Crop and plant protection: The practical foundations SN - 0-7458-0523-X U1 - 632 PY - 1989/// CY - Chichester (United Kingdom) PB - Ellis Horwood, KW - Biological control KW - Chemicals KW - Injurious factors KW - Integrated control KW - Organic farming KW - Plant diseases KW - AGROVOC KW - Plant protection KW - Plant response KW - Tillage N1 - Tables, graphs, index p. 252-261 ER -