00338nam a2200109Ia 4500008004100000020001500041082002400056100002300080245005400103260005200157300001900209260810b        |||||||| |||| 00| 0 eng d  a0674442830  a330.015195bM288.IP  aManski, Charles F.  aIdentification problems in the Social Sciencesb/  aMassachusetts:bHarvard University Press,c1995  ax, 172p. Index