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	1.	English 30 hour clocks : origin & development, 1600-1800 / Jeff Darken and John Hooper. by Darken, Jeff [author.] Hooper, John Material type: Text; Format: print ; Literary form: Not fiction Publisher: Woking : Penita, 1997 Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS543.G7 D37 1997. Add to cart (remove)
	2.	A 30-hour weight driven alarm clock / by John Wilding. by Wilding, John, 1924- [author.] Brant Wright Associates Material type: Text; Format: print ; Literary form: Not fiction Publisher: Ashford, Kent (P.O. Box 22, Ashford, Kent) : Brant Wright Associates Ltd, [1976] Other title: Thirty-hour weight driven alarm clock How to make a replica of an 18th century 30 hour weight driven alarm clock. Availability: Items available for loan: Jost Bürgi Library (1)Call number: TS544 .W55 A13 1976. Add to cart (remove)
	3.	Automatic winding for a 30 hour longcase clock / by John Wilding. by Wilding, John, 1924- [author.] Brant Wright Associates Material type: Text; Format: print ; Literary form: Not fiction Publisher: Ashford, Kent (PO Box 22, Ashford, Kent) : Brant Wright Associates Ltd, 1975 Availability: Items available for loan: Jost Bürgi Library (1)Call number: NK7500.L65 W55 1975. Add to cart (remove)

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