Gavin D.J. Harper
Gavin D.J. Harper has written at least 2 books. Their most popular book is Fuel cell projects for the evil genius with 0 saves with an average rating of -⭐.
Fuel cell projects for the evil genius
ByGavin D.J. Harper
2007 • 196 pages
Run Your Diesel Vehicle on Biofuels: A Do-It-Yourself Manual: A Do-It-Yourself Manual
ByJon Starbuck,Gavin D.J. Harper
2008 • 251 pages