Gertler, Paul J. Impact Evaluation in Practice / Paul J. Gertler, Sebastian Martinez, Patrick Premand, Laura B. Rawlings & Christel M. J. Vermeersch - Washington DC : The World Bank ; 2011 - 244 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 9780821385418 Subjects--Topical Terms: Impact Evaluation Gov. Doc. Class. No.: UN WB Imp-12