?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=M.S.&rft.au=Hamidah%2C+M.S.&rft.aulast=Hamidah&rft.isbn=0727734067&rft.title=Optimisation+of+foamed+concrete+mix+of+different+sand-cement+ratio+and+curing+conditions&rft.date=2005&rft.genre=proceeding