Selection, installation and operation of seismographs
By: by H. E. McComb, chief, Section of Observatories and Equipment.
Contributors: McComb, Harold Edgar, b. 1886.
Series: Special publication; no. 206
Publisher: U.S. Govt. print. off.
Published: 1936
Place of publication: Washington
Language: eng
Number of pages: 43
Subjects: Seismometry.
Other titles: Selection of seismographs.
Notes: At head of title: U.S. Department of Commerce.  Daniel C. Roper, secretary.  Coast and Geodetic Survey.  R. S. Patton, director ...
Running title: Selection of Seismographs.