TY  - RPRT
TI  - Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 98, July-September 1939
AU  - W. Ayzavoglou
PY  - 1940
DO  - 10.3133/b915c
UR  - https://pubs.usgs.gov/publication/b915C
ID  - b915C
ER  -