Inventor's Handbook: How to Develop, Project and Market Your Invention
by Robert Park
ISBN 13: 9781558701496
Format: Paperback (230 pages) Publisher: Betterway Books Published: 01 Aug 1990
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Reinforced Concrete Slabs
by Robert Park,William L. Gamble
ISBN 13: 9780471348504
Format: Hardcover (736 pages) Publisher: John Wiley & Sons Published: 26 Jan 2000