Hansen, Zenon books & textbook
The Goodyear airships
Airship International Press, 1977. /1977T Paperback / 110 Pages
The GOODYEAR Airships (Airship International Press)
Shock, James R.; David R. Smith; Zenon R. Hansen
Unknown Binding / 156 Pages
isbn-10: 0971163715 / isbn-13: 9780971163713
The legend of the bulldog (Newcomen publication)
Newcomen Society in North America /1974T Unknown Binding / 43 Pages
Railway Passenger Car Annual, Volume 4: 1978-1979
W. David Randall; Zenon R. Hansen
RPC Publications /1978T Paperback
Railway Passenger Car Annual, Vol. 1: 1973-1974
W. David Randall Zenon R. Hansen
RPC Publications /1974T Paperback / 139 Pages
