Tiwari, M. (2011). Biodiversity and environmental conservation. Monalisa Enterprises.
Chicago-viite (17. p.)Tiwari, M.M. Biodiversity and Environmental Conservation. [s.l]: Monalisa Enterprises, 2011.
MLA-viite (9. p.)Tiwari, M.M. Biodiversity and Environmental Conservation. Monalisa Enterprises, 2011.
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