1901108
9781556525261
William Gurstelle is a professional engineer who has been researching and building model catapults and ballistic devices for over 20 years.Gurstelle, William is the author of 'Art of the Catapult Build Greek Ballistae, Roman Onagers, English Trebuchets, and More Ancient Artillery', published 2004 under ISBN 9781556525261 and ISBN 1556525265.
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