TY  - BOOK
AU  - Hesser, Dale T
AU  - Leach, Susan S
TI  - Focus on earth science
SN  - 0675167442
U1  - 550 22
PY  - 1997///
CY  - New York
PB  - McGraw-Hill, 
KW  - Earth sciences
KW  - Study and teaching (Secondary)
N1  - Includes index.
ER  -