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2. Properties of concrete;Neville,1996
3. Technical and economical aspects of the use of limestone filler additions in cement;Baron;World Cement,1987
4. Cement with interground materials — capabilities and environmental relief, Part 1;Schmidt;Zement-Kalk-Gips,1992
5. Cement with interground materials — capabilities and environmental relief, Part 2;Schmidt;Zement-Kalk-Gips,1992