author = { Boruch, Robert F. },

title = { Randomized experiments for planning and evaluation a practical guide },

publisher = {SAGE},

isbn = {0803935099},

isbn = {0803935102},

keywords = { Social sciences Methodology , Evaluation research (Social action programs) , Sampling (Statistics) , Social sciences Research , Evaluationsforschung , Experiment , Randomisierung },

year = {1997},

abstract = {Includes bibliographical references (p. 236-250) and indexes},

booktitle = {Applied social research methods series ; 44},

address = { Thousand Oaks, Calif. [u.a.] },

url = { http://slubdd.de/katalog?TN_libero_mab2 }