Environmental protection and afforestation : national seminar on environmental protection(with special emphasis on afforestation) : proceedings of symposium held in Santiniketan,India,4-6September 1988 /

By Ray , Malabika .. New Delhi : Today and Tomorrows Printers and Publishers , 1990 . 306p. : 25cm. . . 8170193702

Advances in the Himalayan ecology /

By Rajwar, G S.. New Delhi : Today and Tomorrows Printers and Publishers , 1991 . v,358p. : 25cm . . 8170193974