1.
 |  | Title: Cestyll tywysogion Gwynedd =: Castles of the princes of Gwynedd by Richard Avent ISBN: 0116711345 Publisher: Gwasg ei Mawrhydi [H.M.S.O.] Pub. Date: 1983
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2.
 |  | Title: Structural Engineering in the 21st Century: Proceedings of the 1999 Structures Congress, April 18-21, 1999, New Orleans, Louisiana by Structures Congress, R. Richard Avent, Mohamed Alawady, New Orleans Structures Congress, Structural Engineering Institute ISBN: 0784404216 Publisher: American Society of Civil Engineers Pub. Date: 01 April, 1999 List Price: $110.00 Amazon.com Price: $110.00 |
3.
 |  | Title: Cadw Guidebook: Criccieth Castle: (Including Pennarth Fawr Medieval Hall-House, St Cybi's Well) (Cadw Guidebook) by Richard Avent ISBN: 0948329416 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 1989
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4.
 |  | Title: Cadw Guidebook: Harlech Castle (CADW Guidebook: Welsh Historic Monuments) by A.J. Taylor, Richard Avent ISBN: 1857601092 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 2002
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5.
 |  | Title: Castles in Wales and the Marches: Essays in Honour of D.J. Cathcart King by John R. Kenyon, Richard Avent ISBN: 0708309488 Publisher: Paul & Co Pub Consortium Pub. Date: 01 June, 1987 List Price: $79.95 Amazon.com Price: $79.95 |
6.
 |  | Title: Cadw Guidebook: Beaumaris Castle (Cadw Guidebook) by A.J. Taylor, Richard Avent ISBN: 0948329017 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 1988
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7.
 |  | Title: Cadw Guidebook: Flint Castle - Ewloe Castle (Cadw Guidebook) by Richard Avent, Derek Renn ISBN: 1857600215 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 1995
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8.
 |  | Title: Heat-straightening repairs of damaged steel bridges : a technical guide and manual of practice (SuDoc TD 2.8:B 76/8) by R. Richard Avent ISBN: B00011695I Publisher: U.S. Dept. of Transportation, Federal Highway Administration Pub. Date: 1998
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9.
 |  | Title: Cadw Guidebook: Dolwyddelan Castle - Dolbadarn Castle (Cadw Guidebook) by Richard Avent ISBN: 1857600657 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 1994
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10.
 |  | Title: Cadw Guidebook: Laugharne Castle (Cadw Guidebook) by Richard Avent ISBN: 1857600665 Publisher: Cadw: Welsh Historic Monuments Pub. Date: 1995
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