TY - BOOK AU - Field, Barry C. TI - Natural resources economics : : an introduction SN - 0071189343 [pbk.] U1 - 333.7 PY - 2000/// CY - New York PB - McGraw-Hill KW - Natural resources KW - Environmental policy KW - Sustainable development N1 - Includes bibliographical references and index UR - www.mhhe.com ER -