TY  - BOOK
AU  - LANSDOWN, Brenda
AU  - Paul E. Blackwood
AU  - Paul E. Brandwein 
TI  - Teaching element science: through investigation and colloquium
SN  - 0155880136
U1  - 500 
PY  - 1971///
CY  - NewYork
PB  - Harcort brace jovanovich,inc
KW  - Science--Study and teaching (Elementary)
KW  - Concept learning
N1  - includes bibliography and index
ER  -