Symposium on the measurement of geologic time

Rupture zones of large South American earthquakes and some predictions

/ John A. Kelleher

Normal geothermal gradient in United States

/ C.E.Van Orstrand

The adirondack, New York, earthquake swarm of 1971 and tectonic implications

/ Marc L. Sbar, John Armbruster, and Yash Pal Aggarwal

The 1990 Manjil, Iran, earthquake