The SciencesJanuary 30, 1915
The Hygienic Home
Some Facts About Ventilation and Fresh Air
Stories by John B. Todd
The SciencesFebruary 21, 1914
Fresh Air in Schoolrooms
Cloth Window Screens that let in Plenty of Filtered Air without Drafts
The Hygienic Home
Some Facts About Ventilation and Fresh Air
Fresh Air in Schoolrooms
Cloth Window Screens that let in Plenty of Filtered Air without Drafts