TY  - RPRT
TI  - Geophysical abstracts, 100-103, January-December 1940. Geophysical abstracts 102, July-September 1940
AU  - W. Ayzavoglou
PY  - 1941
DO  - 10.3133/b925c
UR  - https://pubs.usgs.gov/publication/b925C
ID  - b925C
ER  -