TY - BOOK AU - "United Nations, Economic and Social Affairs (Deptt. of ---)" ED - "United Nations, Economic and Social Affairs (Deptt. of ---)" TI - Natural resources of developing countries: Investigation U1 - "X;271.1(X).N7, L0/UN" PY - 1970/// CY - New PB - York U N USA KW - Natural Resources Economics ER -