TY  - BOOK
AU  - Preston,Helen Hardt Seaton
ED  - American Council on Education.
TI  - A measure for audio-visual programs in schools,
T2  - American Council on Education. Studies. Ser. II
AV  - LB1044 .A6 no. 8
U1  - 371.33523 
PY  - 1944///
CY  - Washington, D.C.
KW  - Audio-visual education
ER  -