TY  - BOOK
AU  - Kummel, Bernhard
AU  - 
TI  - History of the earth: an introduction to historical geology
U1  - 551.7 
PY  - 1961///
CY  - New Delhi
PB  - Eurasia
KW  - Earth
KW  - Atmosphere
KW  - Geology
KW  - Historical geology
ER  -