TY  - BOOK
AU  - Hirsh, Ira J.
AU  - Hirsh, Ira J.
TI  - Measurement of hearing
U1  - P:10C30S:23 
PY  - 1952///
CY  - New York
PB  - Mcgraw - Hill Book Company
KW  - P:10C30S:23
ER  -