TY  - GEN
AU  - Hesser, Dale T.
AU  - Leach, Susan S.
AU  - Sutherland,Berry
TI  - Focus on earth science
SN  - 0675073723 (text)
AV  - QC 
PY  - 1987///
CY  - Columbus, Ohio
PB  - Merrill
KW  - Earth sciences
KW  - Study and teaching Secondary
N1  - Includes bibliographies and index; [v. 1] Text -- [v. 2] Teacher resource book -- [v. 3] A learning strategy for the laboratory -- [v. 4] Review and reinforcement guide
ER  -