Contacts : Dr James H. Clark, Department of Chemistry, University of York, GB - York Y01 5DD, Tel. XX 44 904 432 559, and Dr Karys Kalvert, Contract Chemicals Ltd, Knowsley Industrial Park, Prescott, GB Merseyside L34 9HY, Tel. XX 44 515 488840.
Weitere Auskuenfte sind erhaeltlich bei: Dr. James H; Clark, Department of Chemestry, Universitaet York, GB - York Y01 5DD, Tel. XX 44 904 432 559, und Dr. Karys Kalvert, Contract Chemicals Ltd, Knowsley Industrial Park, Prescott, GB Merseyside L 34 9HY, Tel. XX 44 515 488840.