influence of gypsum on the hydration and properties of port-land cement pastes / by William Lerch.
Lerch, William.
influence of gypsum on the hydration and properties of port-land cement pastes / by William Lerch. - Chicago : Portland Cement Association, Research Laboratory - 41 p. - Bulletin 12 / Portland Cement Association .
influence of gypsum on the hydration and properties of port-land cement pastes / by William Lerch. - Chicago : Portland Cement Association, Research Laboratory - 41 p. - Bulletin 12 / Portland Cement Association .