19 ANDREEV 



chief geologist of the U.S.S.R. Main Geological Survey Directo- 

 rate of the Ministry of Non- Ferrous Metals. He taught at the 

 Moscow Geological Survey Institute from 1931 to 1955, and in 

 1950 became a professor at that institute. He was awarded two 

 orders as well as medals. 



Amiraslanov's major works deal with non-ferrous and rare 

 metals deposits (chiefly copper, lead and zinc). 

 Bibliography: 



Levikhin group of pyritic deposits in the Urals. Works of 

 the U.S.S.R. Academy of Sciences, 4^. Leningrad: 1934. 

 Karpushikhinsk Deposit in the Urals and its Prospects. 

 Moscow-Leningrad: 1936 (Works of the AU-Union Scientific 

 Research Institute of Mineral Raw Materials, #99). 

 Mineralogical Characteristics of Pyritic Deposits in the 

 Urals and Secondary Processes in Them. Moscow -Leningrad: 

 1937. 

 Office: USSR Main Geological Survey 



Directorate of Ministry of Non- Ferrous Metals 

 Moscow, USSR 

 Residence: ul. Chkalova, 18/22 



Moscow, USSR 

 Telephone: K7 88 77 



ANDREEV, NIKOLAI NIKQLAEVICH (Acoustical Physicist) 



N. N. Andreev was born June 28, 1881. In 1909 he graduated 

 from the University of Basel. From 1917 to 1940 he taught and 

 directed research in a number of universities and research 

 institutions. He worked at the Physics Institute of the U.S.S.R. 

 Academy of Sciences from 1940 to 1954. Beginning in 1945, 

 Andreev has worked at the Acoustics Institute of the U.S.S.R. 

 Academy of Sciences. He was elected Corresponding Member 

 of the U.S.S.R. Academy of Sciences in 1933, and in 1953 Acade- 

 mician. 



Andreev' s numerous scientific contributions are mainly in 

 the field of physical and technical acoustics and in the theory of 

 vibrations. They are concerned with dispersion problems of 

 acoustic waves. Andreev established the theory of the diffusion 

 of sound in moving media; he investigated noise caused by 

 airplane motors and propellers, problems of architectural 

 acoustics, and wave acoustics of finite amplitude. Other im- 

 portant contributions of Andreev are in piezo-electricity, in the 

 theory of the telephone, and in musical acoustics. He is the 

 author and editor of many popularized scientific articles and 



