Carvel, J. L. (1949). Fifty years of machine mining progress, 1899-1949 / by J.L. Carvel. Anderson, Boyes and Company.
Chicago Edition CitationCarvel, J. L. Fifty Years of Machine Mining Progress, 1899-1949 / by J.L. Carvel. Anderson, Boyes and Company, 1949.
MLA Edition CitationCarvel, J. L. Fifty Years of Machine Mining Progress, 1899-1949 / by J.L. Carvel. Anderson, Boyes and Company, 1949.
Warning: These citations may not always be 100% accurate.