On the hygienic management of labour in the tropics : an essay with which is incorporated the Labour code by courtesy of the F. M. S. Govt / [Percy Netterville Gerrard].

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On the hygienic management of labour in the tropics : an essay with which is incorporated the Labour code by courtesy of the F. M. S. Govt / [Percy Netterville Gerrard]. Public Domain Mark. Source: Wellcome Collection.