text Washington, D.C Resources for the Future 1970 ix, 161 p.: ill.; 23 cm. PERKEMBANGAN EKONOMI 330.34 330.34 0-8018-1271-2 INLIS000000000000572 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)