Listmania!
Energy and engineering
By an Amazon.com customer
Energy at the Crossroads: Global Perspectives and UncertaintiesEnergy at the Crossroads: Global Perspectives and Uncertainties by Vaclav Smil
Buy new: $11.15 / Used from: $7.26
The fundamentals of energy and energy resources.
Introduction to Hydrogen TechnologyIntroduction to Hydrogen Technology by Roman J. Press
Buy new: $89.95 / Used from: $70.48
A good introduction, though could use some editing.
Fundamentals of Engineering ThermodynamicsFundamentals of Engineering Thermodynamics by Michael J. Moran
Buy new: $132.49 / Used from: $74.99
My favorite text book.