TY  - BOOK
AU  - Hayes, Alfred S
ED  - United States Department of Health, Education and Welfare (Washington)
TI  - Language laboratory facilities: technical guide for the selection, purchase, use and maintenance
U1  - 407.2 21st
PY  - 1963///
CY  - Washington
PB  - U S Department of Health, Education and Welfare
KW  - Language laboratories; Technology-Language
ER  -