ENCYCLOPAEDIA OF THE SOCIAL SCIENCES. Vol.8. Edwin R. A. Seligman, editor-in-chief. Alvin Johnson, associate editor.
ENCYCLOPAEDIA OF THE SOCIAL SCIENCES. Vol.8. Edwin R. A. Seligman, editor-in-chief. Alvin Johnson, associate editor. © 18Oct32; A56788. Macmillan Co. (PCW); 7Jun60; R258136.
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