TY  - RPRT
TI  - Geophysical abstracts, 92-95, January-December 1938. Geophysical abstracts 93, April-June 1938
AU  - W. Ayzavoglou
PY  - 1939
DO  - 10.3133/b909b
UR  - https://pubs.usgs.gov/publication/b909B
ID  - b909B
ER  -