@article{472730, recid = {472730}, author = {Travers, Jeffrey R. and Light, Richard J.}, title = {Learning from experience evaluating early childhood demonstration programs / [electronic resource] :}, publisher = {National Academy Press,}, address = {Washington, D.C. :}, pages = {xiii, 271 p. :}, year = {1982}, url = {http://library.usi.edu/record/472730}, }