@article{Whitaker_1957, title={Manufacture of brick and tile from extruded limestone}, volume={7}, url={https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2133}, DOI={10.3989/mc.1957.v07.i080.2133}, abstractNote={Not available}, number={080}, journal={Materiales de Construcción}, author={Whitaker, L. R.}, year={1957}, month={Jun.}, pages={46–47} }