The behavior of organisms : an experimental analysis / B. F. Skinner ... Skinner, B. F. (Burrhus Frederic), 1904-1990. Psychophysiology. Rats. QP355 .S57 150.1943 SKB Includes bibliographical references and index New York : D. Appleton-Century Company, incorporated 1938 1938 1938 Text ix, 457 p. : eng The Century psychology series