Portland Public Library
Catapult + Design and construction
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http://bibfra.me/vocab/lite/Concept
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Catapult + Design and construction
Name
Catapult + Design and construction
Focus
Catapult + Design and construction
Sub focus
Design and construction
Catapult
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Defending your castle, build catapults, crossbows, moats, bulletproof shields, and more defensive devices to fend off the invading hordes, William Gurstelle
The art of the catapult, build Greek ballistae, Roman onagers, English trebuchets, and more ancient artillery, William Gurstelle
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Catapult + Design and construction
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Design and construction
Catapult
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