De, A. K Environment and Ecology/ Print. Anil Kumar De and Arnab Kumar De - New Delhi: New Age International, 2009. - 180p.: ill.; 29cm. ISBN: 978-81-224-2714-1 Source: B-41547 Subjects--Topical Terms: Natural Resources, Pollution, Ecology LC Class. No.: QH541 / .K85 2009