TY  - RPRT
TI  - Geophysical abstracts 96-99, January-December, 1939. Geophysical abstracts 97, April-June 1939
AU  - W. Ayzavoglou
PY  - 1940
DO  - 10.3133/b915b
UR  - https://pubs.usgs.gov/publication/b915B
ID  - b915B
ER  -