Title: Critically Evaluating the Role of Experiments (New Directions for Evaluation)
Subjects: Educational evaluation, Evaluation, Evaluation research (Social action programs), Case studies, Medicine, Research, Sciences sociales, Recherche, Évaluation, Médecine, Sans-abri, Toxicomanie, Traitement, Alcoolisme, Experiment, Sozialwissenschaften, Aufsatzsammlung