SEVENTY YEARS OF SCIENTIFIC WORK

The 90th birthday of Prof. S.V. Zonn and the 70-year anniversary of th is scientific work will be celebrated in 1996. He is the author of mor e than 600 publications concerning diverse branches of soil science. Z onn is a teacher for numerous soil scientists from more than 30 countr ies. He is well known as an encyclopedic soil scientist, one of the or ganizers of the Russian Soil Science Society, and a vice-editor of Poc hvovedenie (Eurasian Soil Science).