Ashby - An Introduction to Cybernetics - paperback or softback - 36 - X555z

Page - An Introduction to Electrodynamics - New paperback or softback - X555z

Alford - Introduction to English Folklore - New paperback or softback - X555z

Fuller - An Introduction To Prudence - paperback or softback - X555z

Christensen - An Introduction to Educology - New paperback or softback - X555z

Ely - An Introduction to Political Economy - New paperback or softback - X555z

Perry - Introduction to Political Economy - New paperback or softback - X555z