Fog, Mogens H., 1928- Energy efficiency and fuel substitution in the cement industry / Mogens H. Fog and Kishore L. Nadkarni - Washington, D.C., U.S.A. : World Bank, 1983 - xviii, 72 p. : ill. ; 28 cm. - World Bank technical paper . Abstract also in French and Spanish Bibliography : p. 71 enggerspa Subjects--Topical Terms: Cement industries--Energy conservationFuel