Affiliation: | 1. Plant Protection Institute, Hungarian Academy of Sciences, Budapest, P.O. Box 102, H-1525, Hungary;2. Department of Agricultural Chemistry, Kyushu University, Fukuoka 812, Japan;3. Plant Protection Department, Faculty of Agriculture, Tanta University, Kafr El-Sheik, Egypt;4. Alkaloida Chemical Works, Tiszavasvari, P.O. Box 1, H-4440, Hungary |