| Buffon | € 750,00 |
| Morris, F.O. | € 500,00 |
| Archer, G.F. & E.M. Godman | € 450,00 |
| Comte, A. (ed.) | € 350,00 |
| Shirihai, Hadoram | € 200,00 |
| Snouckaert van Schauburg, R.C.E.G.J. Baron & T. Csörgey (illustraties) | € 150,00 |
| Oates, E.W. A | € 150,00 |
| Howman, Keith | € 150,00 |
| Short, Lester & Jennifer Horne | € 150,00 |
| Hilty, S.L. & Brown, W.L. & Guy Tudor (illustrated by) | € 100,00 |
| Sigrist, Tomas | € 100,00 |
| Madsen, Jesper & Gill Cracknell & Tony Fox | € 100,00 |
| Etchécopar, R.D. & F. Hüe | € 100,00 |
| Summers-Smith, J. Denis | € 100,00 |
| Bergman, Sten | € 100,00 |
| Leibak, E. & V. Lilleleht & H. Veromann | € 85,00 |
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| Hauber, Mark E. & John Bates | € 80,00 |
| Anker-Nilssen, T. & V. Bakken & H. Strøm & A.N. Golovkin & V.V. Bianki & I.P. Tatarinkova (eds) | € 80,00 |
| Eigenhuis, K.J. | € 80,00 |
| Shelton, Napier & Dr. Elchin H. Sultanov (with the assistance of) | € 80,00 |
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| Allouse, B.E. | € 75,00 |
| Stacey, Peter B. & Walter D. Koenig | € 65,00 |
| Duivendijk, Nils van | € 65,00 |
| Gibbs, David & Eustace Barnes & John Cox | € 65,00 |
| Anderson, A. | € 65,00 |
| Knaus, Peter &Sylvain Antoniazza & Samuel Wechsler - nd others | € 60,00 |
| Medway, Lord & D.R. Chasen | € 60,00 |
| Wetmore, A. | € 60,00 |
| Witherby, H.F. - a.o. | € 60,00 |
| Redman, Nigel & Terry Stevenson & John Fanshawe | € 55,00 |
| Cheng, Tso-Hsin | € 50,00 |
| Ridgley, Robert S. & Guy Tudor | € 50,00 |
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| Kate, C.G.B. ten | € 45,00 |
| Hilmarsson, Jóhann Óli | € 45,00 |
| Barros, Leonel | € 45,00 |
| Harris, H.E. | € 45,00 |
| Rowlands, Beau W. - a.o. | € 45,00 |
| Snow, David | € 45,00 |
| Kemp, Anna & Jasper de Ruiter & Rien van der Steen & Yvonne Stokman & Jesper de Ruiter (illustraties) | € 45,00 |
| Rijk, J.H. de | € 45,00 |
| Winkler, Hans & David A. Christie & David Nurrney | € 45,00 |
| Tarboton, Warwick | € 40,00 |
| Oliveira Pinto, O.M. de | € 40,00 |
| Fitzgerald, Theodore C. | € 40,00 |
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| Greeney, Haold F. | € 35,00 |
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| Delacour, Jean & Dean Amadon | € 35,00 |
| Chapman, F.M. | € 35,00 |
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| Smythies, B.E. | € 35,00 |
| Yalden, D.W. & U. Albarella | € 35,00 |
| Haverschmidt, Fr. | € 35,00 |
| Mees, G.F. | € 30,00 |
| Mees, G.F. | € 30,00 |
| James, Douglas A. & Joseph C. Neal | € 30,00 |
| Emison, W. B. & Beardsell, C. M. & Norman, F. I. & Loyn, R. H. | € 30,00 |
| Klafs, G. & J. Stübs, & E. Rutschke (ed.). | € 30,00 |
| Neunzig, Karl | € 30,00 |
| Delhaye, Robert & Walter Arlaud (illustrations) | € 30,00 |
| Zimmerman, Dale A. & Donald A. Turner & David J. Pearson | € 30,00 |
| Brown, Jerram L. | € 30,00 |
| Pätzhold, R. | € 30,00 |
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| Busby, John | € 30,00 |
| Oliver, W.R.B. | € 30,00 |
| Brewer, Richard & Gail A.McPeek & Raymond J. Adams | € 30,00 |
| Alderton, David | € 30,00 |
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| Robin, Libby | € 30,00 |
| Turner, William & A.H. Evans (editor) | € 30,00 |
| Trotman, Colin | € 30,00 |
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| Brouwer, G.A. | € 25,00 |
| Brouwer, G.A. | € 25,00 |
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| Smythies, B.E. | € 25,00 |
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| Hellmayr, C.E. | € 20,00 |
| Downes, M.C. & E.H.M. Ealey & A.M. Gwynn & P.S. Young | € 20,00 |
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| Gall, Jean | € 20,00 |
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| Laat, A.H.M. de | € 20,00 |
| DuPont, John E. | € 20,00 |
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| Atwater, Sally & Judith Schnell | € 20,00 |
| Lefranc, Norbert & Tim Worfolk | € 20,00 |