@article{Haarmann_1973, title={Installation and operation of a testing laboratory for production control at cement plants (2nd part)}, volume={23}, url={https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1335}, DOI={10.3989/mc.1973.v23.i152.1335}, abstractNote={Not available}, number={152}, journal={Materiales de Construcción}, author={Haarmann, Fritz}, year={1973}, month={Dec.}, pages={27–33} }