TY  - BOOK
AU  - Paul Dehart Hurd
AU  - James Joseph Gallagher
TI  - New Directions in elementary science teaching
T2  - Wadsworth guides to science teaching
U1  - 372.35 H959n 
PY  - 1968///
CY  - USA
PB  - Wadsworth publishing company, Inc.
KW  -  Science
KW  - Study and teaching (Elementary) Sciences
KW  - Étude et enseignement (Primaire) Natuurwetenschappen
ER  -