TY - GEN AU - Hawksworth , D.L TI - The identification and characterization of pest organisms: Proceedings of the third workshop on the ecological foundations of sustainable agriculture (WEFSA iii), hald at the internaational micological institute, egham, surrey, england, 9 to 11 june 1993 SN - 0851989047 U1 - 595.7 PY - 1994/// CY - UK PB - CAB International KW - PEST ER -