TY  - BOOK
AU  - Blough,Glenn Orlando
AU  - Schwartz,Julius
TI  - Elementary school science and how to teach it
SN  - 0030698901
AV  - Q181 .B558 1969
U1  - 372.3/5 
PY  - 1969///]
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Science
KW  - Study and teaching (Elementary)
KW  - Local
N1  - Bibliography: p. [767]-794
ER  -