Ellis - Principles - New paperback or softback - 97 - X555z

Ludden - Principles of Movement - New paperback or softback - X555z

Saha - Twelve Principles of Light - New paperback or softback - X555z

Brown - Studies of First Principles - New paperback or softback - X555z

Millar - Principles of Mechanics - New paperback or softback - 94 - X555z

Campbell - Principal's Principles - New paperback or softback - X555z

Dewey - Moral Principles in Education - New paperback or softback - 77 - X555z

CHIMEZIE - PRINCIPLES OF CREATION - New paperback or softback - X555z