Manoharachary, C., & Reddy, P. (2004). Principles of environmental studies. B.S.Pub.
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Chicago-čujuhus (17. p.)
Manoharachary, C., juo P.Jayarama Reddy. Principles of Environmental Studies. Hyderabad: B.S.Pub, 2004.
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MLA-čujuhus (9. p.)
Manoharachary, C., juo P.Jayarama Reddy. Principles of Environmental Studies. B.S.Pub, 2004.
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