Clark, F. L. G. (1957). Physical problems in the employment of aging men. International Labour Organization.
Cita Chicago Style (17a ed.)Clark, F. Le Gros. Physical Problems in the Employment of Aging Men. International Labour Organization, 1957.
Cita MLA (9a ed.)Clark, F. Le Gros. Physical Problems in the Employment of Aging Men. International Labour Organization, 1957.
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