TY  - BOOK
AU  - Martorella,Peter H.
TI  - Elementary social studies as a learning system
SN  - 0060442336
U1  - 372.83044 
PY  - 1976///
CY  - New York
PB  - Harper & Row
KW  - Social sciences
KW  - Study and teaching (Elementary)
N1  - Includes bibliographies and indexes
ER  -