TY  - RPRT
TI  - Geophysical abstracts, 100-103, January-December 1940. Geophysical abstracts 101, April-June 1940
AU  - W. Ayzavoglou
PY  - 1941
DO  - 10.3133/b925b
UR  - https://pubs.usgs.gov/publication/b925B
ID  - b925B
ER  -