Ventilation of Manholes. 4. Effect of Vertical Ducts in Combination with Openings in Manhole Covers on the Natural Ventilation.
Contributors: Jones, G.W.; Miller, W.E.; Campbell, J.
Series: Report of investigations (United States. Bureau of Mines) -- 3496
Publisher: s.n
Published: 1940
Place of publication: S.l
Language: eng
Notes: 1