7 books
Hygiene for Students (Classic Reprint)
Milk, Its Production and Uses
Handbook of Public Health and Demography - Primary Source Edition
Hygiene for Students
The Health Officer's Pocket-Book; A Guide to Sanitary Practice and Law for Medical Officers of Health, Sanitary Inspectors, Members of Sanitary Authorities, Etc
Handbook of Public Health and Demography
Milk, Its Production and Uses; With Chapters on Dairy Farming, the Diseases of Cattle, and on the Hygiene and Control of Supplies