Chlorofluorocarbons (CFC) recovery and source reduction study : interim report /

""ILENR/RE-PA-90/04."

Protection of the ozone layer.

Mode of access: Internet.

Present state of knowledge of the upper atmosphere, 1990 : an assessment report : report to Congress /

Prepared on behalf of NASA at its Office of Space Science and Applications, Earth Science and Applications Division.

Economic impact assessment of a chlorofluorocarbon production cap : support document, section 6, proposed rule, Toxic Substances Control Act /

"Contract no. 68-01-6236."