Gupta, Sunil.
Environment and social issues / Sunil Gupta. - New Delhi : Sarup & Sons, 2000. - 237 p. ; 22 cm.
817625102X
Human ecology.
363.7 / GUE
Environment and social issues / Sunil Gupta. - New Delhi : Sarup & Sons, 2000. - 237 p. ; 22 cm.
817625102X
Human ecology.
363.7 / GUE