TY  - BOOK
AU  - Hennessy,David E.
AU  - Walworth,Elaine V.
TI  - Elementary teacher's classroom science demonstrations and activities
U1  - 372.3 
PY  - 1966///
CY  - New Delhi
PB  - Prentice-Hall
KW  - Science
KW  - Experiments
N1  - Includes index
ER  -