Principles of economics /
Principles of economics. /
First principles of economics /
Introduction to economic principles. /
The principles of economics. : Some lies my teachers told me. /
Basic principles of economics for managers /
Instructor`s guide for principles of economics. /
Ecological principles for economic development /
Study guide to accompany Introduction to economic principles /
Economics : principles and issues /
Economics : Principles and Applications /
Economics. : Principles and Policy. /
Economics : an analysis of principles and policies /
Economics. : Principles, problems, and policies. /
Principles of Pyrometallurgy /
Economics : principles of income, prices and growth /
Principles of mining.
Principles of Geodynamics.
Principles of microbiology /
Principles of knitting. Volume 1 /