Exner, Wilhelm Franz (editor). Contributions to the history of the trade and inventions of Austria from the middle of XVIII. ==References====External links== Two volumes. 1; 5 Bl., 558 pp., 1 Bl. 2; 4 Bl., 279 p. With wood engraving vignettes at the beginning of the chapters. 22.5 x 14 cm. Green oleeder bands (back browned, low rubbed), with rich gilding, double gold-embossed fillet on both lids, ornamental corner pieces in the middle fields as well as blind embosing on the back, lids and inner edges with three-sided gold cut. Vienna, W. Braumüller, 1873. ÖBL I, 276. NDB 4, 703. – Published at the World Exhibition in Vienna in 1873. First volume: Raw production and industry. Second volume: Ingenieur-Wesen, Scientific and musical instruments, teaching. With contributions by various experts, among others, on mining, agriculture, chemical industry, paper industry, graphic industry and wood industry (by Exner, who has been a proven expert on this subject). Exner (1840-1931) was a professor of mechanical technology, became director of the Museum of Commerce in Vienna in 1879 and is considered one of the most important technical historians of his time. Exemplary of a better edition in whole leather, bound by the Viennese Bucvhbinderei by Michael Schlöps. – Text browned.