TY  - BOOK
T1  - History and the social sciences new approaches to the teaching of social studies
T2  - A Blaisdell book in education
A1  - Krug, Mark M. 1915-
LA  - English
PP  - Waltham, Massachusetts
PB  - Blaisdell Publishing Company
YR  - 1967
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-1685594773861092008
OP  - 292
CN  - D 16.2 K78
KW  - History : Study and teaching.
KW  - Social sciences : Study and teaching.
ER  -