Rockefeller Foundation & United States. Commission on Industrial Relations. (1915). Information furnished by the Rockefeller Foundation in response to questionnaires submitted by United States Commission on Industrial Relations.
Cytowanie według stylu Chicago (wyd. 17)Rockefeller Foundation i United States. Commission on Industrial Relations. Information Furnished by the Rockefeller Foundation in Response to Questionnaires Submitted by United States Commission on Industrial Relations. [New York?, 1915.
Cytowanie według stylu MLA (wyd. 8)Rockefeller Foundation i United States. Commission on Industrial Relations. Information Furnished by the Rockefeller Foundation in Response to Questionnaires Submitted by United States Commission on Industrial Relations. 1915.
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