Shiach, G M The effectiveness of a Peabody Language Development Kit with severely subnormal children. [electronic resource] - The British journal of educational psychology Nov 1973 - 294-7 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0007-0998 Standard No.: 10.1111/j.2044-8279.1973.tb02270.x doi Subjects--Topical Terms: ChildEducation of Persons with Intellectual DisabilitiesHumansLanguage DevelopmentTeaching Materials