TY  - BOOK
AU  - Coppen,Helen
TI  - Aids to teaching and learning
SN  - 0080129048
AV  - LB1043 .C656 1969
U1  - 371.33 22
PY  - 1969///]
CY  - PERGAMON, New York
PB  - PERGAMON
KW  - Audio-visual education
N1  - Include bibliography
ER  -