Hearing levels of adults by education, income, and occupation, United States, 1960-1962 ; prevalence rates for hearing threshold in the better ear in excess of 15 decibels above and 5 decibels or more below audiometric zero, as determined by pure-tone audiometric tests at frequencies of 500, 1000, 2000, 3000, 4000, and 6000 cycles per second.
| Author/creator | National Center for Health Statistics (U.S.) |
| Format | Book |
| Publication Info | Washington : The Center, 1968. |
| Description | iv, 41 pages : illustrations. |
| Supplemental Content | http://www.cdc.gov/nchs/data/series/sr_11/sr11_031acc.pdf |
| Subjects |
| Series | Vital and health statistics Series 11 ; no. 031 Vital and health statistics. Series 11 ; no. 031. UNAUTHORIZED |
| LCCN | 68060058 |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Electronic Resources | Access Content Online | ✔ Available |