TY  - BOOK
AU  - Bishop,Margaret S.
AU  - Sutherland,Berry
AU  - Lewis,Phyllis G.
ED  - Merrill 
TI  - Focus on earth science: teacher΄s annotated edition 
SN  - 0675025133
U1  - 550.712 23
PY  - 1981///.
CY  - Columbus: 
PB  - Merrill, 
KW  - Earth science
KW  - Study and teaching (Secondary)
N1  - Includes index
ER  -