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ANCIENT CATAPULTS: Some Hypotheses Reexamined Author(s): Duncan B. Campbell Source: Hesperia: The Journal of the American School of Classical Studies at Athens, Vol. 80, No. 4 (September-December 2011), pp. 677-700 Published by: The American School of Classical Studies at Athens Stable URL: http://www.jstor.org/stable/10.2972/hesperia.80.4.0677