Progress of seismological investigations in the United States.
Subtitle: January 1, 1925, to June 30, 1927 [ --July 1, 1927 to January 1, 1930] (Report to the Section of seismology of the International geodetic and geophysical union, International research council)
By: by N.H. Heck, Division of terrestial magnetism and seismology
Series: U.S. Coast and Geodetic Survey. Special publication -- no. 132,167
Publisher: U.S. Govt. Print. Off.
Published: 1927
Place of publication: Washington
Language: eng
Subjects: Earthquakes -- United States
Notes: At head of title: ... Dept. of commerce. U.S. Coast and geodetic survey. E. Lester Jones, director (varies slightly)

"Printed instrumental seismological reports in the United States": 1925/27, p. 8

"Bibliography of articles by members of the United States Coast and geodetic survey": 1925/27, p. 8