Singh, Beena Devi. Environmental management : a geographical study of sultanpur district / Beena Devi Singh. - New Delhi : Deep and Deep Publications , 1992. - xii,252p : ills,tables,maps ; 22cm . NULL ISBN: 8171003923 Rs. 225.00 Subjects--Index Terms: ENVIRONMENTAL MANAGEMENT Dewey Class. No.: 333.7 / SIN/E