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diy лазерный микроскоп -- http://hackteria.org/?p=630
application of microscope to air pollution -- http://www.tandfonline.com/doi/pdf/10.1080/00022470.1966.1046... ‎- ati
Ulaanbaatar air pollution under the microscope -- http://cires.colorado.edu/blogs/mongolia/2012/05/22/ulaanbaat... ‎- ati