Cobteras Heles W Phonological system of a bilingual child - Ann arbor Univ Microfilms 1961 - 215p. tables cm. - University of Indiana linguistics (Department of) Thesis 1961 . Standard No.: 49,260 Source: Textual Subjects--Topical Terms: LINGUISTICS Dewey Class. No.: P:1:(S1), K1 (PD)