Erard Christian. Turner, A. — The Barn Swallow. T & A D Poyser, Christopher Helm, A & C Black Publishers Ltd, London. 2006. 256 pages. ISBN 0-7136-6558-0 (relié). In: Revue d'Écologie (La Terre et La Vie), tome 62, n°1, 2007. p. 104
Erard Christian. Rees, D. — Bewick’s Swan. T & A D Poyser, A& C Black Publishers Ltd, London. 2006. ...
Erard Christian. Gill, F. & Wright, M. — Birds of the world. Recommended English names. Christopher ...
Bourlière François. Bannerman, D.A. et Bannerman W. M. — Birds of Cyprus. Oliver and Boyd, Edinburgh...
Erard Christian. Lever, C. — Naturalised birds of the world. T & AD Poyser, A & C Black Publishers, ...
Erard Christian. Brewer, D. — Wrens, dippers and thrashers. Helm identification guides. Christopher ...
Erard Christian. König, C. & Weickck, F. — Owls of the world. Christopher Helm, A& C Black Publisher...
Erard Christian. Kiwan, G. M., Boyla, K., Castastastell, P., Demirci, B., Özen, M., Welch, H. & Marl...
Dorst Jean. Stuart, D.M. — A book of birds and beasts. Methuen and Co, Londres, 1957. In: La Terre e...
Erard Christian. Message, S. & Taylor, D. — Waders of Europe, Asia and North America. Christopher He...
Erard Christian. Clement, P. & Hathway, R. — Thrushes. Helm Identification Guides. Christopher Helm,...
Erard Christian. Brown, R., Ferguson, J., Lawrence, M. & Lees, D. — Tracks and signs of the birds of...
Erard Christian. Fry, C. H., Keith, S. & Urban, E. K. (eds). — The birds of Africa. Volume VII. Spar...
Erard Christian. Dietz, C., Helversen, O. von & Nill, D. — Bats of Britain, Europe & Northwest Afric...
Erard Christian. Borrow, N. & Demey, R. — Birds of western Africa. Helm Identification Guides. Chris...
Bourlière François. Bannerman, D. A. — The Birds of the British Isles. Volume IX. Edinburgh and Lond...
Erard Christian. Rees, D. — Bewick’s Swan. T & A D Poyser, A& C Black Publishers Ltd, London. 2006. ...
Erard Christian. Gill, F. & Wright, M. — Birds of the world. Recommended English names. Christopher ...
Bourlière François. Bannerman, D.A. et Bannerman W. M. — Birds of Cyprus. Oliver and Boyd, Edinburgh...
Erard Christian. Lever, C. — Naturalised birds of the world. T & AD Poyser, A & C Black Publishers, ...
Erard Christian. Brewer, D. — Wrens, dippers and thrashers. Helm identification guides. Christopher ...
Erard Christian. König, C. & Weickck, F. — Owls of the world. Christopher Helm, A& C Black Publisher...
Erard Christian. Kiwan, G. M., Boyla, K., Castastastell, P., Demirci, B., Özen, M., Welch, H. & Marl...
Dorst Jean. Stuart, D.M. — A book of birds and beasts. Methuen and Co, Londres, 1957. In: La Terre e...
Erard Christian. Message, S. & Taylor, D. — Waders of Europe, Asia and North America. Christopher He...
Erard Christian. Clement, P. & Hathway, R. — Thrushes. Helm Identification Guides. Christopher Helm,...
Erard Christian. Brown, R., Ferguson, J., Lawrence, M. & Lees, D. — Tracks and signs of the birds of...
Erard Christian. Fry, C. H., Keith, S. & Urban, E. K. (eds). — The birds of Africa. Volume VII. Spar...
Erard Christian. Dietz, C., Helversen, O. von & Nill, D. — Bats of Britain, Europe & Northwest Afric...
Erard Christian. Borrow, N. & Demey, R. — Birds of western Africa. Helm Identification Guides. Chris...
Bourlière François. Bannerman, D. A. — The Birds of the British Isles. Volume IX. Edinburgh and Lond...
Erard Christian. Rees, D. — Bewick’s Swan. T & A D Poyser, A& C Black Publishers Ltd, London. 2006. ...
Erard Christian. Gill, F. & Wright, M. — Birds of the world. Recommended English names. Christopher ...
Bourlière François. Bannerman, D.A. et Bannerman W. M. — Birds of Cyprus. Oliver and Boyd, Edinburgh...