http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Scientific assessment of ozone depletion, 2002
twenty questions and answers about the ozone layer
National Oceanic and Atmospheric Administration.
National Oceanic and Atmospheric Administration, National Aeronautics and Space Administration, United Nations Environment Programme, World Meterological Organization, European Commission.
Title from title screen (viewed on July 2, 2003).
Mode of access: Internet from the NOAA web site. Address as of 7/02/03: http://www.al.noaa.gov/WWWHD/Pubdocs/Assessment02/Q&As.html; current access is available via PURL.
Report (Global Ozone Research and Monitoring Project) ; no. 47