Mirza, Ashraf M.2009-04-172009-04-1719741974Source: Masters Abstracts International, Volume: 45-06, page: 3226.http://hdl.handle.net/10393/10883http://dx.doi.org/10.20381/ruor-17054Abstract not available.162 p.Engineering, Civil.Study of gypsum solution in the Welland Tunnel area.Thesis