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Copyright (c) 2016 Evgeniy Stoyanov

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INDEXING

 

Environmental Science Journals,<br /> Natural Science Journals, SciTech Journals, Illustrata: Natural Science ICV 2015: 81.51DOAJREPEC   citefactor researcherid ECONBIZ ERIHPLUS     Sherpa" researchbib Gale Base    

Ulrichs     Stanford    

cornelniv    oclc     Toc     google
    ez3     ilinois sjif ohs 



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