Bodden, Jack Leo, 1943- Cognitive complexity as a factor in appropriate vocational choice [microform] / by Jack Leo Bodden. - Ann Arbor, Mich. : University Microfilms International, 1969. - 1 microfilm reel : positive ; 35 mm. Thesis (Ph.D.) - Ohio State University, 1969. Subjects--Topical Terms: Cognition.Vocational interests.