00709cam a2200205Ia 4500 624.1834 PER L-NUST, P-16 Perkins, Philip Harold. 43218 Repair, protection and waterproofing of concrete structures P.H. Perkins. 3rd ed. London ; New York : E&FN Spon, 1997. xix, 233 p. : ill. 0 0 0 624_183400000000000_PER Concrete coatings. 43219 Concrete construction Maintenance and repair. 43220 MCE 379 Waterproofing. 22101 ebrary, Inc. 622 http://www.columbia.edu/cgi-bin/cul/resolve?clio6621216 ddc BK 547022 547022 0 0 ddc 0 0 MCE MCE 2014-06-27 1 624.1834 PER MCE-43885 2014-07-03 2014-07-03 2014-06-27 BK