First Principles of Agriculture (Classic Reprint)

The Principles of Logic, Vol. 2 (Classic Reprint)

The Selling Process: A Handbook of Salesmanship Principles (Classic Reprint)

Principles of Universal Physiology (Classic Reprint)

Principles of Education (Theoritical and Applied) (Classic Reprint)

The First Principles of Knowledge (Classic Reprint)

Principles of Coal Mining (Classic Reprint)

First Principles of Material Well-Being (Classic Reprint)