Hartwig, Frederick. Exploratory data analysis / Frederick Hartwig ; with Brian E. Dearing. - New bury Park : Sage Publications, 1979. - 83 p. : ill. ; 22 cm. - A Sage university paper Quantitive applications in the social sciences ; ser. no. 07-016 . Bibliography: p. 79-80. ISBN: 0803913702 RM58.89 LCCN: 79-67621 Subjects--Topical Terms: Social sciences--Statistical methods.