Environmental studies :
Patra, A. K.
Environmental studies : Man and Environment / A. K. Patra. - New Delhi : Kalyani Publishers, 1997. - 449 p. : ill. ; 22 cm.
333.7 PAT
Environmental studies : Man and Environment / A. K. Patra. - New Delhi : Kalyani Publishers, 1997. - 449 p. : ill. ; 22 cm.
333.7 PAT