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Effects of Two Antecedent Conditions on Vocalization Frequency of Severely Retarded Children
Halle, James W., Hunt, Frances M., Bjorenson, Janet E.Volume:
49
Language:
english
Journal:
Journal of Speech and Hearing Disorders
DOI:
10.1044/jshd.4904.349
Date:
November, 1984
File:
PDF, 1.14 MB
english, 1984