Larry L. Orr Abt Associates Inc academic-icon Created with Sketch. Academic BookSocial ExperimentsEvaluating Public Programs With Experimental MethodsLarry L. OrrPublished: October 1998From $75.00
academic-icon Created with Sketch. Academic BookSocial ExperimentsEvaluating Public Programs With Experimental MethodsLarry L. OrrPublished: October 1998From $75.00
