1. Labour and Steel /   Publication: New York : International Pub., 1933 . 304 p. : , The first seven chapters of this work were submitted to the Faculty of Political Science at Columbia University in partial fulfilment of the requirement for the Degree of Doctor of Philosophy, Cf. p. 13." | Reference notes" : p. 272-282. Date:1933 Availability: Copies available: Turkeyen Campus Caribbean Research Library [HD8039 S62 U66] (1), Actions: Add to cart No cover image available No cover image available
2. Labour and coal /   Publication: New York : International Pub., 1931 . 255 p. : Date:1931 Availability: No items available: Withdrawn (1), Actions: Add to cart No cover image available No cover image available
3. Labor problems in the United States /   Publication: New York : Longmans, Green, 1939 . x, 288 p. : Date:1939 Availability: Copies available: Turkeyen Campus Social Sciences [HD8072 D65] (1), Actions: Add to cart No cover image available No cover image available
4. Labour fact book   Publication: New York International Publishers 1931 . v. Date:1931 Availability: Copies available: Turkeyen Campus Social Sciences [HD8072 L253] (1), Actions: Add to cart No cover image available No cover image available