- Human-Powered Vehicles by Allan V. Abbott, David Gordon Wilson,  1995-07
 - THIRD INTERNATIONAL HUMAN POWERED VEHICLE SCIENTIFIC SYMPOSIUM PROCEEDINGS by International Human Powered Vehicle Association,  1986
 - Toronto Islands: Toronto, Lake Ontario, Toronto Harbour, Billy Bishop Toronto City Airport, Quadracycle (Human- Powered Vehicle) 
 - A more practical HPV.(INPUT OUTPUT)(human powered vehicles): An article from: Mechanical Engineering-CIME by Jeffrey Winters,  2010-08-01
 - Second International Human Powered Vehicle Scientific Symposium by International Human Powered Vehicle Association,  1983-01-01
 - Human-Powered Vehicles: Bicycle, Rickshaw, Unicycle, Human-Powered Transport, Bobsleigh, Luge, Kayak, Sled, Canoe, Galley 
 - Human Power: Human-Powered Vehicles, Human Power Devices, Bicycle, Rickshaw, Unicycle, Human-Powered Transport, Bobsleigh, Luge, Kayak, Sled 
 - Freight Bicycle: Bicycle, Tricycle, Human- powered transport, Hawker (trade), Bicycle trailer, Boda- boda, Cycle rickshaw, Quadracycle (human- powered vehicle), Pashley Cycles 
 - Bike Cult: The Ultiamte Guide to Human-Powered Vehicles by David B. Perry,  1995-01-01
 - Unicycle: Human-Powered Vehicle, Single-Track Vehicle,Bicycle, Penny-Farthing,Crankset,Bicycle Pedal 
 - First International Human Powered Vehicle Scientific Symposium by International Human Powered Vehicle Association,  1982-01-01
 - Bike Cult: The Ultimate Guide to Human-Powered Vehicles by David B. Perry,  1995-07
 - SCIENTIFIC AMERICAN MAGAZINE DECEMBER 1983 HUMAN POWERED LAND VEHICLES by SCIENTIFIC AMERICAN MAGAZINE,  1983
 - Assisted human powered vehicles and velomobiles - wettergeschutzte Elektrofahrrader: Proceedings of the 4th Velomobile Seminar Assisted Human Powered Vehicles", ... Interlaken, Switzerland, August 18, 1999 
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