Hunter, David B. Concepts and principles of international environmental law : an introduction / by David Hunter, Julia Sommer, and Scott Vaughan. - [Nairobi] : United Nations Environment Programme, c1994. - 51 p. : col. ill. ; 21 cm. - Environment and trade ; 2 . Includes bibliographical references (p. 43-51). LCCN: 96980814 Subjects--Topical Terms: Environmental law, International. LC Class. No.: K3585.4 / .H86 1994 Dewey Class. No.: 341.7/62