Preventive medicine and hygiene By , Professor of Preventive Medicine and Hygiene, Harvard University; Director of the School for Health Officers of Harvard University and the Massachusetts Institute of Technology. With Chapters upon Sewage and Garbage, by , Professor of Sanitary Engineering, Harvard University; Vital Statistics, by , Assistant Surgeon-General, U. S. Public Health Service; , by , Medical Director, National Committee for Mental Hygiene. Second Edition, Thoroughly Revised. Large octavo; 1209 +76 pages. New York and London: , 1916