TY  - BOOK
AU  - Butts,David
TI  - The teaching of science: a self-directed planning guide
SN  - 0060411023 
U1  - 372.35044/B988t 
PY  - 1974///
CY  - New York
PB  - Harper & Row
KW  - Science-Study and teaching (Elementary)
ER  -