Small Gas Engines 9th edition. By Alfred Roth Books / Paperback Reference › Encyclopedia, Dictionary, Reference Publisher: Goodheart-Willcox, January 2009 Price $19.95 Free Shipping Send to a friend Used - Good Good condition. 9th edition. (Reference, Manual, Instruction, small engines) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. $19.95 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.