TY  - BOOK
AU  - Gutenberg,Beno
TI  - Internal constitution of the earth  / 
U1  - 551.1 GUT 
PY  - 1951///
CY  - New York : 
PB  - Dover Publications, 
KW  - Earth
KW  - Internal structure
N1  -  Includes bibliographical references
ER  -