TY  - BOOK
AU  - Martorella,Peter H., x
AU  - x
TI  - Elementary Social stueies: As a learning system
SN  - 0060442336
U1  - 372.83044/M387e 
PY  - 1976///
CY  - NewYork ; London
PB  - Harper & Row
KW  - Social Sciences - Study & teaching (Elementary)
N1  - Includes
ER  -