Oppenheim, A. N. Questionnaire design and attitude measurement / A. N. Oppenheim. - London : Heinemann, c 1970. - x, 298 p. : ill. ; 22 cm. Include index. 323 323 ISBN: 435 82676 X Subjects--Topical Terms: Attitude.--PsychologyTesting.--Questionnaires. Dewey Class. No.: 136 / O5g