POPULATION AN INTRODUCTION TO CONCEPTS AND ISSUES （EIGHTH EDITION）
JOHN R.WEEKS2222 年出版676 页ISBN：0534529763
POPULATION AN INTRODUCTION TO CONCEPTS AND ISSUES SIXTH EDITION
JOHN R.WEEKS1996 年出版682 页ISBN：0534264603
POPULATION AN INTRODUCTION TO CONCEPTS AND ISSUES THIRD EDITION
JOHN R.WEEKS1986 年出版525 页ISBN：0534061389
Population An Introduction To Concepts and Issues Updated Fifth Edition
John R.Weeks1994 年出版583 页ISBN：0534211208
REGIONAL ENVIRONMENTAL ISSUES MANUAL:BRINGING ENVIRONMENTAL ISSUES CLOSER TO HOME
BARRY THOMAS1993 年出版148 页ISBN：003097142X
INTRODUCTION TO ENVIRONMENTAL ISSUES
SAMUEL N.LUOMA2222 年出版548 页ISBN：0023728108
