TY  - BOOK
AU  - Hesser,Dole T.
AU  - Leach,Susan S.
TI  - Focus on earth science
SN  - 0-675-02671-7
U1  - 550 H587 1989 
PY  - 1989///
CY  - Columbus, Ohio
PB  - Merrill Publishing Company
KW  - Earth science
N1  - Includes appendices, glossary and index
ER  -