Articles:

THEODORE J. HOOVER

Vibration research—introduction
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 113-114. [PDF] [References]  

LYDIK S. JACOBSEN

Experimental study of the dynamic behavior of models of timber walls subjected to an impulsive, horizontal, ground vibration
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 115-146. [PDF] [References]  

F. J. ROGERS

Experiments with a shaking machine
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 147-159. [PDF]  

LYDIK S. JACOBSEN

Motion of a soil subjected to a simple harmonic ground vibration
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 160-195. [PDF] [References]  

LYDIK S. JACOBSEN

An approximate solution of the steady forced vibration of a system of one degree of freedom under the influence of various types of damping
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 196-223. [Abstract] [PDF] [References]  

A. L. KIMBALL, E. O. WATERS, and J. P. DEN HARTOG

Discussions of the paper on forced vibrations
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 224-230. [PDF] [References]  

HENRY D. DEWELL

Some remarks on the shaking table investigations
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 231-236. [PDF] [References]  

Seismological notes
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 1930 20: 237-240. [PDF]  

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