TY  - BOOK
AU  - Bernard
AU  - Beeler
AU  - Spock
TI  - Teacher's manual for science : a waya to solve problems
U1  - 500 BER 
PY  - 1960///.
CY  - New York : 
PB  - The Macmillan, 
KW  - Science
KW  - Science- Study and teaching
ER  -