au.\*:("PENNER KA")
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COMPARISON OF SIGN VERSUS VERBAL SYMBOL TRAINING IN RETARDED ADULTSPENNER KA; WILLIAMS WN.1982; PERCEPT. MOT. SKILLS; ISSN 0031-5125; USA; DA. 1982; VOL. 55; NO 2; PP. 395-401; BIBL. 12 REF.Article
