ENCYCLOPEDIA OF THE SOCIAL SCIENCES. Vol.1. Edwin R. A. Seligman, editor-in-chief; Alvin Johnson, associate editor.
ENCYCLOPEDIA OF THE SOCIAL SCIENCES. Vol.1. Edwin R. A. Seligman, editor-in-chief; Alvin Johnson, associate editor. © 31Jan30; A18434. Macmillan Co. (PCW); 3Jan58; R205441.
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