TY  - RPRT
TI  - Geophysical abstracts, 100-103, January-December 1940. Geophysical abstracts 103, October-December 1940
AU  - W. Ayzavoglou
PY  - 1941
DO  - 10.3133/b925d
UR  - https://pubs.usgs.gov/publication/b925D
ID  - b925D
ER  -