TY  - BOOK
AU  - Umbgrove,J.H.E.
TI  - The pulse of the earth
SN  - 9024750989 :
U1  - 551.4 
PY  - 1971///
CY  - The Hague
PB  - Interscience Pub.
KW  - Earth sciences
KW  - Physical geography
N1  - Includes bibliographical references and index
ER  -