00795nam0-22002891i-450-99000033694040332120001010000033694FED01000033694(Aleph)000033694FED0100003369420001010d--------km-y0itay50------baitay-------001yyPortland cement technologyBy J.C. Witt.BrooklynChemical Publishing Co.1947VIII,518 p., ill., tav., 22 cm668Witt,Joshua Chitwood<1884- >337014ITUNINARICAUNIMARCBK99000033694040332104 186-285CI 4116DINCHDINCHPortland cement technology124595UNINAING01