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Paul P. Goudkoff, Ph. D., who has 
specialized in foraminifera work, after 
three years with the Hammond interests 
in California, has opened consulting of- 
fices at 635 Petroleum Securities Bldg., 
Los Angeles, for mining and oil exam- 
inations and the microscopic correlation 
of oil formations. 
Nearly all of the large oil companies 
have been carrying on extensive experi- 
ments of microscopic correlation of oil 
formations, and many special departments 
for this work have been established 
through which remarkable results have 
been attained. 
Mr. Koupkdff was professor of Eco- 
nomic Geology since 1907 at Tomsk In- 
stitute of Technology, Siberia, and was 
also director of the Siberian Geology 
Committee, which corresponds to the' 
U. S. G. S. 
