World resources 1990-1991 a report by the world resources institute in collaboration with The United Nations environment programme and The United Nations development programme. Oxford University Press.
Chicago Style CitationWorld Resources 1990-1991 a Report By the World Resources Institute in Collaboration With The United Nations Environment Programme and The United Nations Development Programme. Oxford University Press.
MLA CitationWorld Resources 1990-1991 a Report By the World Resources Institute in Collaboration With The United Nations Environment Programme and The United Nations Development Programme. Oxford University Press.
Warning: These citations may not always be 100% accurate.