Croker John Rudolph Phonological model of children's articulation compence Croker John Rudolph - Ann arbor Univ Microfilms 1967 - xxiiii,165p. illus cm. - Western reserve university speech Pathology (department of )Disseertation 1967 . Standard No.: 48,880 Source: Textual Subjects--Topical Terms: LINGUISTICS Dewey Class. No.: P:10aS1:682, K7 (PD)