RLT Industries, Inc.

year of pub­li­ca­ti­onISBNauthor(s)title
2006978-0-9776497-0-9Bernard F. Barcio · Ralph Payne-GallweyCatapult Design, Construction and Competition with the Projectile Throwing Engines of the Ancients
2010978-0-9776497-1-6Amy TomsMy Sister Makes Me Laugh
  ''978-0-9776497-3-0Ron L. TomsThe Big Book of Catapult and Trebuchet Plans!