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	1.	The Jewelers' directory issue of the manufacturers, importers and wholesalers in the jewelry and kindred lines. Material type: Continuing resource; Format: print Publisher: New York, Jewelers' circular-Keystone. Availability: Items available for loan: Jost Bürgi Library (1)Call number: NK7300.7 .D57 1946. Add to cart (remove)
	2.	The watch adjuster's manual; a practical guide for the watch and chronometer adjuster in making, springing, timing and adjusting for isochronism, positions and temperatures. by Fritts, Charles Edgar [author.] Edition: 3rd edition. Material type: Text; Format: print ; Literary form: Not fiction Publisher: Philadelphia, Keystone, 1904 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS547 .F75 1904. Add to cart (remove)
	3.	Watch and clock escapements : a complete study in theory and practice of the lever, cylinder and chronometer escapements, together with a brief account of the origin and evolution of the escapement in horology. / compiled from the well-known escapement serials published in the Keystone. Nearly two hundred original illustrations. by Keystone Edition: [1st edition]. Material type: Text; Format: print ; Literary form: Not fiction Publisher: Philadelphia : Published by the Keystone, 1904 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS548 .K44 1904. Add to cart (remove)
	4.	The escapement and train of American watches; a practical and encyclopedic treatise and text book, by T.J. Wilkinson. by Wilkinson, T. J. (Thomas Jessop), 1864- [author.] Edition: 2d edition. Material type: Text; Format: print ; Literary form: Not fiction Publisher: Philadelphia, Penna., Keystone Pub. Company [1928]Copyright date: ©1928 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS548 .W55 1928. Add to cart (remove)
	5.	Lessons in horology / by Jules Grossmann ... and Hermann Grossmann. Authoritzed translation by James Allan, Jr. ... volume1- by Grossmann, Jules, 1829-1907 [author.] Grossmann, Hermann, 1863- [author.] Allan, James, 1865- [translator.] Material type: Text; Format: print ; Literary form: Not fiction Language: English Original language: French Publisher: Philadelphia : The Keystone, 1905- Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS545 .G87 1905 v.1. Add to cart (remove)
	6.	Jewelry trade mark book. Material type: Text; Format: print ; Literary form: Not fiction Publisher: Camden, New Jersey : Keystone Publishing Company, 1934 Other title: Keystone jewelry trade mark book Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS758 .J49 1934. Add to cart (remove)