00728cam a22002411 4500 gs 19000343 DLC 20260227111323.0 750501s1919 xx 000 0 eng gs 19000343 (OCoLC)1307074 DLC NhD DLC premarc TN36 .A35 no. 29 Wilson, Alfred William Gunning, 1873- Potash recovery at cement plants, by Alfred W. G. Wilson. Ottawa, J. de L. Taché, printer, 1919. 34 p. plates. 25 cm. Canada. Mines Branch. Bulletin no. 29 Plates printed on both sides of leaf. Bibliography: p. 32-34. Potash. 25952 25952