@booklet {4248, title = {"Walden 1.9: Successive Approximations"}, howpublished = {Behavior and Social Issues }, volume = {1.2 }, year = {1991}, month = {Fall/Winter 1991}, pages = {53-60}, abstract = {

Stages to 1948 Skinner, Walden Two.

}, keywords = {Male author}, author = {Mark A. Mattaini} }