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  1. Free-operant avoidance of time-out from response-independent food presentation by pigeons pecking a key / by Gregory Galbicka.
    By: Galbicka, Gregory,
    Publication info: 1981.
    Contributed by: University of Florida, George A. Smathers Libraries (archive.org)
    Subjects: Behavior  Dissertations, Academic  Operant behavior  Pigeons  Psychology  Psychology thesis Ph. D  Reinforcement (Psychology)  UF  
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