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CONTINGENCIES OF REINFORCEMENTS;
By : Skinner, B.F.
Author: Skinner, B.F.Publisher: Appleton-Century-CroftsPublication Date: 1969TCondition: GoodBinding..
$44.44
Science and human behavior. (A Free Press paperback)
By : B.F. Skinner
Author: B.F. SkinnerPublisher: Free Press / Collier-Macmillan LPublication Date: 1965TCondition: Acc..
$25.00
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