Cover image for Hearing levels of children by age and sex: United States
Title:
Hearing levels of children by age and sex: United States
Author:
Roberts, Jean, 1918-
Personal Author:
Publication Information:
Washington : U.S. Health Services and Mental Health Administration; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1970.
Physical Description:
iv, 51 pages : illustrations ; 26 cm.
Language:
English
Added Author:
Format :
Book