TY  - RPRT
TI  - Progress report on selected geophysical activities of the United States, 1973-76; a quadrennium of cooperation and progress
AU  - Kendall L. Svendsen
PY  - 1977
DO  - 10.3133/cir763
UR  - https://pubs.usgs.gov/publication/cir763
ID  - cir763
ER  -