TY  - BOOK
AU  - Blough,Glenn Orlando
AU  - Campbell,Marjorie Halnes
TI  - Making and using classroom science materials in the elementary school: apparatus, demonstrations, equipment, experiments
PY  - 1954///
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Science
KW  - Study and teaching (Primary)
KW  - Local
KW  - Scientific apparatus and instruments
ER  -