TY  - BOOK
AU  - Danielson,Eric W.
AU  - Denecke, Edward J. 
TI  - Earth science
SN  - 0022772200
U1  - 550 
PY  - 1985///
CY  - New York
PB  - Macmillan publishing company
KW  - Earth sciences
KW  - Juvenile literature
ER  -