Kiernang C. C. Behaviour modification with the severely retarded Kiernang C. C.; Woodford F. Peter - North Holland , Elsevier Excerpta Medica 1975 - viii, 332p cm. - Irrmy study group 8 . Standard No.: 85,382 Source: Textual Subjects--Topical Terms: PSYCHOLOGY Dewey Class. No.: SN1,6, L5