TY  - BOOK
AU  - Heller,Robert
AU  - Cooney,Timothy
TI  - Challenges to science to earth science
SN  - 007028038X
U1  - 550 
PY  - 1979///
CY  - New York
PB  - McGraw-hill book Company
KW  - Earth sciences
N1  - Includes index
ER  -