TY  - RPRT
TI  - Geophysical abstracts, 88-91, January-December 1937. Geophysical abstracts 90, July-September 1937
AU  - W. Ayvazoglou
PY  - 1938
DO  - 10.3133/b895c
UR  - https://pubs.usgs.gov/publication/b895C
ID  - b895C
ER  -