1 Sargent, J. A. Self regulation : the motion picture production code 1930-1961 / by John Alan Sargent Ann Arbor, Mich. : 1975 University Microfilms vi, 263 leaves ; Facsim. of: "A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the University of Michigan, 1963." Includes bibliographical references. Bibliography: p. 234-246.