The work of an industrial hygiene division in a state department of labor ..Jean Atherton Flexner · First published 1939Open the Tome
The American Federation of LaborLewis Levitzki Lorwin, Lewis L Lorwin, Lewis L. with Jean Atherton Flexner LORWIN · First published 1933Open the Tome
International transport workers' federationLewis Levitzki Lorwin, Jean Atherton Flexner · First published 1926Open the Tome
