Blelloch, D. H. (1938). A historical survey of factory inspection in Great Britain. International Labour Organization.
Citazione stile Chigago Style (17a edizione)Blelloch, David Habershon. A Historical Survey of Factory Inspection in Great Britain. International Labour Organization, 1938.
Citatione MLA (9a ed.)Blelloch, David Habershon. A Historical Survey of Factory Inspection in Great Britain. International Labour Organization, 1938.
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