TY  - BOOK
AU  - Gega, Peter C.
TI  - Concepts experiences in elementary school science
SN  - 0-02-341331-x
U1  - 372.35 
PY  - 1994///
CY  - New York
PB  - Macmillan
KW  - Science &Technology
KW  - Primary Education
ER  -