00481nam a2200133Ia 4500008004100000040001700041082002400058100002700082245011500109260003600224300001300260650004700273700002700320190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta371.39bS663P  aSmith, Wendell I (Ed.) 0aProgrammed learningbtheory and research: on enduring problem in psychology selected readingscWendell I Smith  aPrincetonbD Van Nostrandc1968  ax, 240p.  aProgrammed instructions; Teaching machines  aMoore, J William (Ed.)