Srivastava,Smriti. Environment and ecology (2nd ed.). S.K.Kataria 628 Sr774e2 2nd ed.
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Chicago-čujuhus (17. p.)
Srivastava,Smriti. Environment and Ecology. 2nd ed. New Delhi: S.K.Kataria 628 Sr774e2 2nd ed.
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MLA-čujuhus (9. p.)
Srivastava,Smriti. Environment and Ecology. 2nd ed. S.K.Kataria 628 Sr774e2 2nd ed.
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