00880nam a2200277 a 4500 1355964 20200717144304.0 810831s1981 mau b 001 0 eng 80050984 0395307678 (pbk.) DLC DLC DLC H62 .N675 1981 300/.72 2nd WEB Nonreactive measures in the social sciences / Eugene T. [i.e. J.] Webb ... [et al.]. 2nd ed. Boston : Houghton Mifflin, c1981. x, 394 p. ; 22 cm. Previous ed.: Unobtrusive measures. 1966. Includes index. Bibliography: p. 331-378. Social sciences Research. 1389 Webb, Eugene J., 1933- 1390 Unobtrusive measures. 1391 7 cbc orignew 2 ocip 19 y-gencatlg ddc BOOK 571 571 0 0 ddc 0 0 MAIN MAIN OS 2020-07-17 4059 0 300/.72 WEB 2020-0762 2020-07-17 00:00:00 2020-07-17 BOOK