TY  - BOOK
AU  - Blough,Glenn Orlando
AU  - Schwartz,Julius
TI  - Elementary school science and how to teach it
AV  - Q181 .B558 1964
U1  - 372.35 
PY  - 1964///]
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Science
KW  - Study and teaching (Elementary)
KW  - Sciences
KW  - Étude et enseignement (Primaire)
KW  - États-Unis
N1  - Bibliography: p. 617-640
UR  - http://www.archive.org/details/elementaryschool00blou
UR  - http://www.openlibrary.org/books/OL5911276M
ER  -