Our school buildings, their construction, heating, ventilation, school hygiene, physical culture, etc Browne, Valentine, author. Schools Environment, Controlled Sanitation Yonkers, N.Y. : The Gazette Press, 1893 Text 64 pages nlm:nlmuid-101768854-bk 101768854 http://resource.nlm.nih.gov/101768854 OCLC: 1249794857 English New York City The National Library of Medicine believes this item to be in the public domain. https://creativecommons.org/publicdomain/mark/1.0