Eine Frage zu The Oil-shales of the Lothians. Pt. I. The Geology of the Oil-shale Fields, by R. G. Carruthers, Based on the Work of H. M. Cadell and J. S. Grant Wilson. Pt. II. Methods of Working the Oil-shales, by W. Caldwell. Pt. III. The Chemistry of The... an den Kundensupport stellen