TY - BOOK AU - Manski,Charles F. TI - Identification problems in the social sciences SN - 9780674442849 (Pbk) U1 - 300 M318I 23 PY - 1995/// CY - Cambridge, Mass. PB - Harvard University Press KW - Social sciences KW - Statistical methods KW - Estimation theory N1 - Bibliography: p155-163. _ Includes index ER -