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	1.	The best of J.E. Coleman: clockmaker : from his "Questions & answers" and "Clockwise & otherwise" columns over the past forty years, published in the American horologist & jeweler / compiled and edited by Orville R. Hagans. by Coleman, Jesse E, 1897-1975 [author.] Hagans, Orville Roberts, 1897- Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver, CO : Hagans, [1979]Copyright date: ©1979 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS547 .C64 1979. Save to lists Add to cart (remove)
	2.	Beauty and art from the past / compliments, Orville R. Hagans. by Hagans, Orville Roberts, 1897- [author.] Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver : Hagans Clock Manor, [1957] Availability: Items available for loan: Jost Bürgi Library (2)Call number: NK7481.M5 H46 1957, ... Save to lists Add to cart (remove)
	3.	Complicated watches; translated, compiled and edited by Emanuel Seibel and Orville R. Hagans. by Seibel, Emanuel [ed. and tr.] Hagans, Orville Roberts, 1897- [joint ed. and tr.] Edition: [First edition]. Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver, Colorado : Press of the Roberts Publishing Company, [1945]Copyright date: ©1945 Availability: Items available for loan: Jost Bürgi Library (2)Call number: TS547 .S42 1945, ... Save to lists Add to cart (remove)
	4.	Gruen watches : a special collection / donated by Robert Dietrich Gruen ... to the AWI-ELM Charitable Trust Orville R. Hagans Museum. by AWI-ELM Charitable Trust Orville R. Hagans Museum, Cincinnati, Ohio Hagans, Orville Roberts, 1897- American Watchmakers Institute Material type: Text; Format: print ; Literary form: Not fiction Publisher: Cincinnati, Ohio : American Watchmakers Institute, [1986?] Availability: Items available for loan: Jost Bürgi Library (2)Call number: TS541.I6 G78 1986, ... Save to lists Add to cart (remove)
	5.	A practical course of instruction in the science of horology : or the construction and repair of time-measuring instruments / [Orville R. Hagans]. by Hagans, Orville Roberts, 1897- [author.] Material type: Text; Format: print ; Literary form: Not fiction Publisher: [Place of publication not identified] : American Horologist, [1940-1942]Copyright date: ©1940-1942 Availability: Items available for loan: Jost Bürgi Library (2)Call number: TS547 .H32 1940, ... Save to lists Add to cart (remove)
	6.	Scientific timing / arranged by Orville R. Hagans. by Purdom, Charles E, 1871- [author.] Hagans, Orville Roberts, 1897- [editor.] Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver : Press of the Roberts Pub. Company, [1947] Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS547 .P87 1947. Save to lists Add to cart (remove)
	7.	Watch & clock information, please / Wm. H. Samelius ; compiled and edited by Orville R. Hagans, with the assistance of Harold J. and Charlill R. Hansen, Josephine F. Hagans. by Samelius, William H [author.] Hagans, Orville Roberts, 1897- Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver, CO (6930 E. Girard Ave., Denver 80224) : O.R. Hagans, [1981]Copyright date: ©1981 Other title: Watch and clock information, please Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS548 .S25 1981. Save to lists Add to cart (remove)
	8.	Wm. Hardy's timekeeper : a pre-release from the American Horologist & Jeweler, 1952. by Hagans, Orville Roberts, 1897- [author.] Material type: Text; Format: print ; Literary form: Not fiction Publisher: Denver : American Horologist and Jeweler, 1952 Other title: William Hardy's timekeeper : a pre-release from the American Horologist & Jeweler, 1952 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS548 .H34 1952. Save to lists Add to cart (remove)