Global Environment Facility. (1993). Global monitoring of greenhouse gases including ozone: Project Document.
Citazione stile Chigago Style (17a edizione)Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.
Citatione MLA (9a ed.)Global Environment Facility. Global Monitoring of Greenhouse Gases Including Ozone: Project Document. 1993.
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