Category:Conservation by sanitation (1911)

Media in category "Conservation by sanitation (1911)"

The following 2 files are in this category, out of 2 total.

• 
  Conservation by sanitation; air and water supply, disposal of waste, including a laboratory guide for sanitary engineers (IA 39002022382585.med.yale.edu).pdf 891 × 1,389, 360 pages; 12.82 MB
  
• 
  Conservation by sanitation; air and water supply, disposal of waste, including a laboratory guide for sanitary engineers (1911) (14595720560).jpg 4,152 × 2,479; 1.44 MB