To: “Ultrasonic Propagation in Solenhofen Limestone at High Pressures” (August 1978, p. 1014–1017), by I. J. Fritz
Keyword(s):
Two recent technical papers were erroneously copyrighted by SEG. The papers were produced by agencies of the federal government and are in the public domain. The papers are: “Ultrasonic Propagation in Solenhofen Limestone at High Pressures” (August 1978, p. 1014–1017), by I. J. Fritz; and “Calculations of Self‐Potential Anomalies near Vertical Contacts” (February 1979, p. 195–205), by David V. Fitterman.