Airborne contagion and air hygiene : an ecological study of droplet infections /
Wells, William Firth, 1887-
Airborne contagion and air hygiene : an ecological study of droplet infections / William Firth Wells - Cambridge, Mass. : Harvard University Press, 1955 - 423 p. : ill. ; 24 cm.
Includes index
Communicable diseases
Air--Purification
Airborne contagion and air hygiene : an ecological study of droplet infections / William Firth Wells - Cambridge, Mass. : Harvard University Press, 1955 - 423 p. : ill. ; 24 cm.
Includes index
Communicable diseases
Air--Purification
