Baker - Mathematical Theory of the Steam Engine - New paperback or sof - X555z

Cunningham - Relativity and the Electron Theory - New paperback or sof - X555z

Chase - Civil Government in Theory and Practice - New paperback or sof - X555z

Hertefeld - Game of Skat in Theory and Practice - New paperback or sof - X555z

Everstine - About Learning Theory Then and Now - New paperback or sof - X555z

Hughes - Introduction to the Theory of Yin-Yang - New paperback or sof - X555z

Heiner - Criminological Theory. Just the Basics - New paperback or sof - X555z

Nock - Theory of Education in the United States - New paperback or sof - X555z