Ministry of Education and Science of Ukraine, Sumy State University, & Economic Research Centre. (2007). Економіка для екології: "Economics for Ecology" ISCS'2007.
Tohutoru Kātū Chicago (17th ed.)Ministry of Education and Science of Ukraine, Sumy State University, me Economic Research Centre. Економіка для екології: "Economics for Ecology" ISCS'2007. 2007.
Tohutoro MLA (9th ed.)Ministry of Education and Science of Ukraine, et al. Економіка для екології: "Economics for Ecology" ISCS'2007. 2007.
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