Environmental biology (Principles of ecology) /
Verma, P. S.
Environmental biology (Principles of ecology) / P. S. Verma, V. K. Agarwal. - Rev. ed. - New Delhi : S. Chand, 1993. - viii, 591 p.
8121908590 : KES 405
Ecology.
Environmental biology (Principles of ecology) / P. S. Verma, V. K. Agarwal. - Rev. ed. - New Delhi : S. Chand, 1993. - viii, 591 p.
8121908590 : KES 405
Ecology.