Singh, Awadhesh Kumar Paryavaran Sanrakshan evam Gramya Vanya Vikas/ Awadhesh Kumar Singh - New Delhi : Shivank Prakasan , 2014. - 192 p. ill. ; 22 c.m. ISBN: 9789382998440 Subjects--Topical Terms: Environmental Science Dewey Class. No.: 363.7 / SIN/P