574.52603
S573E
           Swarup, R (Ed.)
               Encyclopaedia of ecology, environment and pollution control environmental health, education and public understanding \ R Swarup - New Delhi : Mittal, 1992.
               v.2 (v, 374p)
                ISBN: 81-7099-360-181-7099-362-8 (v.1)

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                Subjects: Ecology-Encyclopaedias; Nature and nature-Encyclopaedias; Pollution control-Encyclopaedias.