TY  - BOOK
AU  - Prayoon Thapnuan
TI  - The preparation of inexpensive audiovisual teaching materials: a course for teachers at teachers colleges in Thailand 
PY  - 1982///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Teaching
KW  - Audio-visual materials
N1  - Thesis (Ph.D.)-University of Northern Colorado, 1981
ER  -