TY - BOOK AU - Williams,Jon L. TI - Operant learning: procedures for changing behavior SN - 0818500581 AV - BF319.5.O6 W54 U1 - 153.1/52 PY - 1973///] CY - Monterey, Calif. PB - Brooks/Cole Pub. Co. KW - Operant conditioning KW - Local N1 - Bibliography: p. 216-232 ER -