ENCYCLOPAEDIA OF THE SOCIAL SCIENCES. Edwin R. A. Seligman, editor-in-chief; Alvin Johnson, associate editor. Vol.3.
ENCYCLOPAEDIA OF THE SOCIAL SCIENCES. Edwin R. A. Seligman, editor-in-chief; Alvin Johnson, associate editor. Vol.3. © 30Dec30; A32496. Macmillan Co. (PCW); 17Sep58; R221302.
Macmillan Co.|PCW