339 SHCHUKIN 



1936) and also in expeditions on territories beyond the Baikal, 

 Kazakhstan, Crimea, Karelia, Central Urals, Kol'skii Peninsula 

 and other regions. In 1927 Shcherbakov became acquainted 

 with some deposits of Central Europe and Sicily. In 1956 he 

 was the head of a U.S.S.R. delegation at the 20th Session of the 

 International Geological Congress in Mexico. Shcherbakov used 

 a comprehensive geochemical approach to study the distribution 

 of rare element deposits. He also studied the geology of Cen- 

 tral Asia. Shcherbakov has also been active in popularizing 

 geology. 



As of 1961 Shcherbakov was Chairman of the Antarctic Com- 

 mission of the U.S.S.R. Academy of Sciences. 



In January 1961, he visited the United States to participate 

 in National Academy of Sciences conferences and meetings at 

 Stanford University, California. 

 Bibliography: 



The meaning of determination of the age of intrustions for 

 practical geology. Works of the 1st Session of the Com- 

 mission on Determination of the Absolute Age of Rocks 

 (April 12-15, 1952), Moscow, 1954, 203-211. 

 On survey maps for magmatogenic ore deposits. Izvest. 

 Akad. Nauk S.S.S.R., Ser. Geol., 1952, #4, 9-15. 

 High temperature ore formations of central Caucasus. 

 Questions of Mineralogy, Geochemistry and Petrography. 

 Moscow-Leningrad: 1946, 219-27. 



Principles and methodology in compiling metallogenic maps. 

 Soviet Geology, 1955, #5, 53-64. 



Source of raw materials of U.S.S.R. rare metals. Rare 

 Metals, 1938, #1, 14-24. 



Genetic types of tin ore manifestation in Central Asia. 

 Scientific Summaries of Works of the Tadzhik- Pamir e Expe- 

 dition. Moscow- Leningrad: 1936, 477-507. 

 Office: Joint Antarctic Commission of USSR Academy of 



Sciences 

 Leninskii Prospekt, 14 

 Moscow, USSR 

 Residence: n. Yakimanka, 3 



Moscow, USSR 

 Telephone: V3 24 52 



SHCHUKIN, ALEKSANDR NIKQLAEVICH (Radioengineer) 



A. N. Shchukin was born July 22, 1900.' In 1927 he graduated 

 from the Leningrad Electrotechnical Institute. He taught there 

 from 1929 to 1941 and in 1939 was made a professor. At about 



