Saksena, D. N. Environmental biology / D. N. Saksena and D. M. Gaidhane - India Studium Press Pvt. Ltd 2010 - 316 p. ISBN: 9789380012216 Subjects--Topical Terms: Nature --Effect of human beings on.Human ecology. ᅠPollution. ᅠ Dewey Class. No.: 363.73 SAK-D