Principles of mining.

Principles of dynamics /

Principles of refrigeration /

Principles of Psychotherapy /

Principles of auditing. /

Principles of economics /

Principles of Zoophysiology : volume 1.

The Principles of Engineering Materials

Chemical principles of environmental pollution. /

Principles of color reproduction /

Principles of Organic Synthesis /

Principles of frequency Modulation.

Principles of Modern Physics /

Principles of corporate finance. /

Principles of metal casting /

Principles of Engineering Geology /

Principles of software engineering /

Principles of corporate finance /

Principles of Lasers /

Chemical principles /

Metallurgical thermochemistry. /

Principles of Pyrometallurgy /