Public health and hygiene; a students' manual

Public health and hygiene; a students' manual

Manylion Llyfryddiaeth
Prif Awdur: Bolduan, Charles Frederick 1873
Awduron Eraill: Bolduan, Nils William 1907
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Philadelphia and London W. B. Saundrs company 1936.
Pynciau:
Hygiene, Public.
Contagion and contagious diseases.