@book{ Solr-1240396, title = {Cooperative learning in middle-level schools}, series = {Aspects of learning}, author = {Rottier, Jerry}, editor = {Ogan, Beverly J.}, address = {Washington, D.C.}, publisher = {NEA Professional Library, National Education Association}, year = {1991}, pages = {112}, note = {"Stock no. 3068-0-00"--P. 4 of cover.}, }