TY  - BOOK
AU  - Umbgrove,Johannes Herman Frederick
AU  - Houten,J.L.van
TI  - The pulse of the earth / 
U1  - 550 
PY  - 1947///
CY  - The Hague: 
PB  - M. Nijhoff, 
KW  - Geology
KW  - Geophysics
KW  - Earth
N1  -  Translated from the Dutch manuscript by J.L. van Houten. of. Pref;  Includes bibliographical references and index
ER  -