![Book Review Primer of Hygiene . By John W. Ritchie and Joseph S. Caldwell. Illustrated by Karl Hassmann and Hermann Heyer. Yonkers-on-Hudson, N. Y.: World Book Company. 1910. Principles of Public Health . By Thomas D. Tuttle, B.S., M.D. Yonkers-on-Hudson, N. Y.: World Book Company. 1910.]()
Book Review Primer of Hygiene . By John W. Ritchie and Joseph S. Caldwell. Illustrated by Karl Hassmann and Hermann Heyer. Yonkers-on-Hudson, N. Y.: World Book Company. 1910. Principles of Public Health . By Thomas D. Tuttle, B.S., M.D. Yonkers-on-Hudson, N. Y.: World Book Company. 1910.The Boston Medical and Surgical Journal · 1911