TY  - BOOK
AU  - Freeman,Kenneth
TI  - Helping children understand science
AV  - Q161 .F73
U1  - 372.35 
PY  - 1954///]
CY  - Philadelphia
PB  - Winston
KW  - Science
KW  - Study and teaching
KW  - Local
N1  - Includes bibliography
ER  -