Microeconomics

 Paul Heyne;

Chicago : Pergamon , 1988

Comunicative syllabus design and methodology / Keith Johnson

 Johnson, Keith;

Oxford : Pergamon , 1982

Management control / Samuel Eilon

 Eilon, Samuel;

Oxford : Pergamon Press , 1979

An Introduction to economics for students of agriculture

 Hill, Berkeley;

Oxford : Pergamon , 1980