Click to increase image sizeClick to decrease image size Notes† This investigation was supported in part by a Public Health Service fellowship (No. 7-F1-MH-14, 660-01A1 BEH) from the National Institute of Mental Health, and in part by contributions from Mr. O.B.E. and from the National Nudist Council. I wish to acknowledge my appreciation to the individuals and organizations who helped me in carrying out my research. I am also grateful to John I. Kitsuse for his encouragement, suggestions, and criticisms.
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Martin S. Weinberg (1966) studied this question.