Break the Siege: Make Your...
Rob Ives
Buy from $10.97
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3, 2, 1, Go!
Emily Arnold McCully
Buy from $8.65
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The Catapult: A History
Tracey Rihll
Buy from $12.94
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Rubber Band Engineer: Build...
Lance Akiyama
Buy from $8.27
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The Art of the Catapult:...
William Gurstelle
Buy from $6.34
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Defending Your Castle: Build...
William Gurstelle
Buy from $10.49
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The Crossbow: Its Military...
Sir Ralph Payne-Gallwey
Buy from $16.25
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I Can Make Fantastic Fliers ...
Kristina A Holzweiss,
Amy Barth
Buy from $10.14
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The Book of the Crossbow:...
Sir Ralph Payne-Gallwey
Buy from $8.07
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High-Tech DIY Projects with...
Maggie Murphy
Buy from $8.99
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A Low-Tech Mission
Shannon Mcclintock Miller (Illustrator)
Buy from $20.47
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Catapult: Harry and I Build a...
Jim Paul
Buy from $9.29
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Make a Catapult
Meg Gaertner
Buy from $19.70
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Make Your Own Water Balloon...
Julia Garstecki,
Stephanie Derkovitz
Buy from $20.63
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Whoosh Boom Splat: The Garage...
William Gurstelle
Buy from $8.64
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The Great Pumpkin Smash
Lori Haskins Houran,
Maarten Lenoir (Illustrator)
Buy from $6.67
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Greek and Roman Artillery:...
E W Marsden
Buy from $441.00
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The crossbow
Sir Ralph Payne-Gallwey
Buy from $31.75
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The crossbow, mediaeval and...
Sir Ralph Payne-Gallwey
Buy from $22.88
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The assisted take-off of...
Calvin Mathews Bolster
Buy from $30.11
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The projectile-throwing...
Sir Ralph Payne-Gallwey
Buy from $41.98
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