endangered species

शुपियाँ ज़िला Qadri, Azhar (21 June 2013). "State animal, bird among endangered species". The Tribune (Chandigarh). मूल से 26 जून 2013 को पुरालेखित. अभिगमन

Mech, L. David (1981), The Wolf: The Ecology and Behaviour of an Endangered Species, University of Minnesota Press, p. 353, ISBN 0-8166-1026-6 Kerr, R

Mech, L. David (1981), The Wolf: The Ecology and Behaviour of an Endangered Species, University of Minnesota Press, p. 352, ISBN 0-8166-1026-6 Goldman

D.C. 1994 Habitat characteristics of wetlands of the Betwa Basin, India, and wintering populations of endangered waterfowl species. Global wetlands.

Mech, L. David (1981), The Wolf: The Ecology and Behaviour of an Endangered Species, University of Minnesota Press, p. 352, ISBN 0-8166-1026-6 Goldman