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*Pearson HA, ''Condensation trails where they occur and what can be done about them'',1942, NTRS:2006-11-06, Report Number: NACA-WR-L-474. link: [http://naca.central.cranfield.ac.uk/report.php?NID=1917]
*Pearson HA, ''Condensation trails where they occur and what can be done about them'',1942, NTRS:2006-11-06, Report Number: NACA-WR-L-474. link: [http://naca.central.cranfield.ac.uk/report.php?NID=1917]
==Weblinks==
==Weblinks deutsch==
*http://www.umweltbundesamt.de/uba-info-presse/hintergrund/chemtrails.pdf
*http://www.umweltbundesamt.de/uba-info-presse/hintergrund/chemtrails.pdf
*http://www.martin-wagner.org/anti-chemtrails.htm
*http://www.martin-wagner.org/anti-chemtrails.htm
*http://www.readyfor3000.de/Kondensstreifen.htm
*http://wissen.spiegel.de/wissen/dokument/dokument.html?id=38785499&top=SPIEGEL
==Weblinks englisch==
*http://www.skepdic.com/chemtrails.html
*http://www.skepdic.com/chemtrails.html
*http://www.lacarte.org/health/chemtrails/debunkery/
*http://www.lacarte.org/health/chemtrails/debunkery/
*http://contrailscience.com/contrail-or-chemtrail/
==Quellennachweise==
==Quellennachweise==