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TitleAuthor(s)Issue Date
Opportunities and Constraints for Sustainable Development in Semi-Arid AfricaUnited Nations Environment Programme(UNEP)1995
Organic waste: options for small-scale resource recovery urban solid waste seriesInge Lardinois1993
Organizational and Spatial Frameworks for State of the Environment ReportingG. Sheely1989
Organohalogen compounds in the marine environmentIMO1992
Orientation manual. Implementing rules and regulations for title III: the manaagement of hazardous wasteEnvironment Management Bureau1995
OrionScanOrion Systems, Inc2013
OUR COMMON FUTURE the World Commission on Environment and DevelopmentInternational Union For Conservation of Nature (IUCN)1987
Our Intensive Efforrts to Overcome the Tragic History of Minamata DiseaseChina1997
Our vision for every child, life in all its fullnessWorld Vision Vietnam2005
Outline of improvement plan for water pollution control in Hanoi city (Ver. E)The Japan International Cooperation Agency2013
OVERSEAS ENVIRONMENTAL COOPERATION CENTRER DIRECTORYMichio Háhimoto1990
Overview of Best Practice Environmental Management in Mining (2 cuốn)EPA1995
Overview of outcomes from POPs a wareness raising workshop working groupsUnited Nations Enviroment Programme1998
Ozon depleting Substances Regulation Compliace GuideBC Environment1994
Ozone Protection Act 1989 No. 208NSW(New South Wales)1995
Ozone Protection ACT 1989-Regulation 1991Tim Moore1991
Ozone Protection in the United StatesElizabeth cook1996
Ô nhiễm hoá học (sách tóm tắt)Đoàn Thanh niên Bộ KH,CN,MT1997
Ô nhiễm không khí trong nhàCục Môi trường1998
Ô nhiễm không khí và xử lý khí thải. Tập 3: Lý thuyết tính toán và công nghệ xử lý khí độc hạiTrần Ngọc Chấn2001