Erard Christian. Rasmussen, P. C. & Anderton, J. C. — Birds of South Asia. The Ripley guide. Vol. 1 : Field guide. Vol. 2 : Attributes and status. Smithsonian Institution & Lynx Edicions, Washington, D. C. & Barcelona. 2005. In: Revue d'Écologie (La Terre et La Vie), tome 60, n°3, 2005. p. 294
Érard Chr. Wheeler, B. K.— Birds of prey of the East. A field guide. Princeton University Press, Pri...
Erard Chr. Kennedy, R. S., Gonzales, RC., Dickinson, E.C., Miranda, H.C. Jr & Fisher, T.H. — A guide...
Bourlière François. Peterson, R.T. — A Field Guide to the Birds of Texas. Boston, Houghton Mifflin C...
Bourlière François. Ali, S. & Ripley, S.D. — A pictorial guide to the birds of the Indian subcontine...
Érard Chr. Grewal, B., Sen, S., Singh, S., Devasar, N. & Bhatia, G.— A photographic field guide of t...
Bourlière François. Ali, S. and Ripley, S.D. — Handbook of the Birds of India and Pakistan, together...
Erard Christian. Robson, C. — A field guide to the birds of South-East Asia. New Holland Publishers ...
Erard Christian. Jeyarajasingam, A & Pearson, A. — A field guide to the birds of West Malaysia and S...
Erard Christian. Grimmett, R. & Inskipp, T. — Birds of Southern India. Helm Field Guides. Christophe...
Erard Christian. Manakadan, R. , Daniel, J. C. & Bhopal e, N. — Birds of the Indian subcontinent. A ...
Bourlière François. Peterson, R.T. ; Mountfort, G. ; Hollom, F.A.D.. — A field-guide to the Birds of...
Bourlière François. Mackinnon, J. & Phillipps, K. — A Field Guide to the Birds of Borneo, Sumatra, J...
Erard Christian. Grimmett, R. & Inskipp, T. — Birds of Northern India. Helm Field Guides. Christophe...
Erard Christian. Sibley, D. — Field guide to the birds of eastern North America. Christopher Helm, A...
Bourlière François. Fleming, R.L. Sr., Fleming, R.L., Jr. & Bangdel, L.S. — Birds of Nepal, with ref...
Érard Chr. Wheeler, B. K.— Birds of prey of the East. A field guide. Princeton University Press, Pri...
Erard Chr. Kennedy, R. S., Gonzales, RC., Dickinson, E.C., Miranda, H.C. Jr & Fisher, T.H. — A guide...
Bourlière François. Peterson, R.T. — A Field Guide to the Birds of Texas. Boston, Houghton Mifflin C...
Bourlière François. Ali, S. & Ripley, S.D. — A pictorial guide to the birds of the Indian subcontine...
Érard Chr. Grewal, B., Sen, S., Singh, S., Devasar, N. & Bhatia, G.— A photographic field guide of t...
Bourlière François. Ali, S. and Ripley, S.D. — Handbook of the Birds of India and Pakistan, together...
Erard Christian. Robson, C. — A field guide to the birds of South-East Asia. New Holland Publishers ...
Erard Christian. Jeyarajasingam, A & Pearson, A. — A field guide to the birds of West Malaysia and S...
Erard Christian. Grimmett, R. & Inskipp, T. — Birds of Southern India. Helm Field Guides. Christophe...
Erard Christian. Manakadan, R. , Daniel, J. C. & Bhopal e, N. — Birds of the Indian subcontinent. A ...
Bourlière François. Peterson, R.T. ; Mountfort, G. ; Hollom, F.A.D.. — A field-guide to the Birds of...
Bourlière François. Mackinnon, J. & Phillipps, K. — A Field Guide to the Birds of Borneo, Sumatra, J...
Erard Christian. Grimmett, R. & Inskipp, T. — Birds of Northern India. Helm Field Guides. Christophe...
Erard Christian. Sibley, D. — Field guide to the birds of eastern North America. Christopher Helm, A...
Bourlière François. Fleming, R.L. Sr., Fleming, R.L., Jr. & Bangdel, L.S. — Birds of Nepal, with ref...
Érard Chr. Wheeler, B. K.— Birds of prey of the East. A field guide. Princeton University Press, Pri...
Erard Chr. Kennedy, R. S., Gonzales, RC., Dickinson, E.C., Miranda, H.C. Jr & Fisher, T.H. — A guide...
Bourlière François. Peterson, R.T. — A Field Guide to the Birds of Texas. Boston, Houghton Mifflin C...