BECK, R. - Das Kohlenvorkommen des Kandertals im Berner Oberland.

1948. Beitr. z. Geol. d. Schweiz, Geotechn. Ser. 28; 54 pp. 20 fig./phot. 62 phot. on 12 photopl. 7 plts. w. maps & sections folding-out, some col. Orig. wrps. with libr. stamp, contents very good, lg4to.