TY  - BOOK
T1  - A guide to audio-visual materials for elementary school social studies.
T2  - The Rambler audio-visual teaching series
A1  - Hartley, William Harrison
LA  - English
PP  - Brooklyn
PB  - Rambler Press
YR  - 1950
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217603618553
OP  - 192
CN  - LB 1043 H37
KW  - Audio-visual education.
KW  - Social sciences : Study and teaching (Elementary)
ER  -