TY  - RPRT
TI  - Geophysical abstracts, 88-91, January-December 1937. Geophysical abstracts 89, April-June 1937
AU  - W. Ayvazoglou
PY  - 1938
DO  - 10.3133/b895b
UR  - https://pubs.usgs.gov/publication/b895B
ID  - b895B
ER  -