Hammer Barbara Udell Operant verbal conditioning as a function of affectual connotaion homogeneity frequency and cemantic chaining - Ann arbor Univ Microfilms 1965 - vii,98p. illus cm. - University of Marylang psychology (Department of) 1064 . Standard No.: 51,681 Source: Textual Subjects--Topical Terms: LINGUISTICS Dewey Class. No.: P:(SN1), K5 (PD)