363.7392
S774V
           Shrivastava, Hari Narayan
               Vayumandaliya pradushaan \ Hari Narayan Shrivastava - New Delhi : Rajkamal, 1992.
               166p.
                ISBN: 81-7178-273-6

131322
                Subjects: Ecology; Water-Pollution; Acid rain; Air-Pollution.