TY - BOOK AU - Khandker, R.S. AU - Koolwal, B.G. AU - Samad, A.H. TI - Handbook on impact evaluation: quantitative methods and practices SN - 9780821380284 AV - DUCE HD75.9.K52 PY - 2010/// CY - Washington PB - The World bank N1 - includes an appendix and index ER -