TY  - BOOK
AU  - Bernstein, Leonard
TI  - Concepts and challenges in physical science
SN  -  9781556757440
AV  - QC 23 .C66 1991 
PY  - 1991///
CY  - Englewood Cliffs, N.J.
PB  - Globe Book Co.
KW  - Physical sciences -- Study and teaching (Elementary)
KW  - Physical sciences -- Study and teaching (Secondary)
KW  - Earth sciences -- Study and teaching (Elementary)
N1  - Includes index
ER  -