National Speech and Hearing Survey. Final Report [electronic resource] / Forrest M. Hull and Others.
Reported are the results of the National Speech and Hearing Survey conducted to estimate the prevalence of speech and hearing disorders in the public school populations, grades 1-12, in coterminous United States, and to obtain descriptive information about normal and abnormal speech and hearing beha...
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Format: | Electronic eBook |
Language: | English |
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[S.l.] :
Distributed by ERIC Clearinghouse,
1976.
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Internet
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ED129045
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ED129045 | Available |