TY  - RPRT
TI  - Geophysical abstracts, 88-91, January-December 1937. Geophysical abstracts 91, October-December 1937
AU  - W. Ayvazoglou
PY  - 1938
DO  - 10.3133/b895d
UR  - https://pubs.usgs.gov/publication/b895D
ID  - b895D
ER  -