 | Peeters, Hans | € 5,00 |
 | Pemberton, John E. | € 12,50 |
 | Penhallurick, R.D. | € 8,00 |
 | Perrins, Christopher | € 8,00 |
 | Peterson, Frank T. | € 6,00 |
 | Philippona, Jules | € 5,00 |
 | Poelmans, Wiel & Jan van Diermen | € 7,50 |
 | Postma, W.P. & H. Kleijn | € 8,00 |
 | Power, Elaine | € 8,00 |
 | Praktische Zakboekjes voor Natuurvrienden | € 10,00 |
 | Priednieks, J. & M. Strazds & A. Strazds & A. Petrins & J. Viksnes (ed.) | € 15,00 |
 | Purcell, Rosamond & Linnea S. Hall & René Cordado | € 20,00 |
 | Pycraft, W.P. | € 10,00 |
 | Ratcliffe, Derek | € 15,00 |
 | Raven, dr. Charles E. | € 8,00 |
 | Redman, Nigel & Terry Stevenson & John Fanshawe | € 55,00 |
 | Reichholf, Josef H. (eingeleitet und kommentiert von) | € 10,00 |
 | Ridgely, Robert S. & Guy Tudor | € 30,00 |
 | Ridgley, Robert S. & Guy Tudor | € 50,00 |
 | Rijk, J.H. de | € 45,00 |
 | Ripley, S. Dillon | € 25,00 |
 | Ripley, S.D. | € 15,00 |
 | Robbins, Chandler S. - e.a. | € 5,00 |
 | Robbins, G.E.S. | € 10,00 |
 | Roberts, Austin | € 10,00 |
 | Roberts, Sonia | € 9,00 |
 | Robertson, C.J.R. | € 5,00 |
 | Robin, Libby | € 30,00 |
 | Roodbergen, Sake P. | € 5,00 |
 | Rosair, David | € 12,50 |
 | Rowlands, Beau W. - a.o. | € 45,00 |
 | Ruitenbeek, Wim & Kees J.G. Scharringa & Piet J. Zomerdijk | € 8,00 |
 | Rutgers, A. | € 15,00 |
 | Sauer, F. | € 5,00 |
 | Schauensee, Rodolphe Meyer de & William Henry Phelps, Jr. | € 30,00 |
 | Scheufler, Horst & Arnd Stiefel | € 8,00 |
 | Schmidt, Egon | € 8,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schoonhoven, Daan | € 10,00 |
 | Schurmann, Ted | € 6,00 |
 | Schutte, Hesper &Tom den Boer | € 10,00 |
 | Scott, Bob | € 6,00 |
 | Scott, Peter | € 5,00 |
 | Scott, Peter (editor) | € 10,00 |
 | Sepp, Christiaan & Cornelius Nozeman & Dr. A. Schierbeek (inleiding) | € 10,00 |
 | Sepp, Christiaan & Cornelius Nozeman & Dr. A. Schierbeek (inleiding) | € 10,00 |
 | Sewell, Matt | € 6,00 |
 | Shelton, Napier & Dr. Elchin H. Sultanov (with the assistance of) | € 80,00 |
 | Shirihai, Hadoram | € 200,00 |
 | Short, Lester & Jennifer Horne | € 150,00 |
 | Siegfried, W.R. | € 5,00 |
 | Sigrist, Tomas | € 100,00 |
 | Sinclair, Ian | € 12,50 |
 | Sinclair, Valerie | € 10,00 |
 | Singer, Detlef | € 5,00 |
 | Skutch, Alexander F. | € 15,00 |
 | Smit, J.J. & Terlouw, R.J.S. | € 6,00 |
 | Smythies, B.E. | € 25,00 |
 | Smythies, B.E. | € 35,00 |
 | Snouckaert van Schauburg, R.C.E.G.J. Baron & T. Csörgey (illustraties) | € 150,00 |
 | Snow, David | € 45,00 |
 | Sponholz, Hans | € 6,00 |
 | Stacey, Peter B. & Walter D. Koenig | € 65,00 |
 | Steltman, Piet - e.a. | € 5,00 |
 | Stokes, Hazel | € 5,00 |
 | Stolk, Ari | € 5,00 |
 | Summers-Smith, J. Denis | € 30,00 |
 | Summers-Smith, J. Denis | € 100,00 |
 | Sutton, George Miksch | € 15,00 |
 | Taapken, Jaap | € 5,00 |
 | Tanis, J.J.C. | € 5,00 |
 | Tanis, J.J.C. | € 5,00 |
 | Tarboton, Warwick | € 40,00 |
 | Taylor, Moss | € 20,00 |
 | The Voyage of the Beagle | € 10,00 |
 | Thijsse, dr. Jac. P. | € 5,00 |
 | Thijsse, Jac. P. | € 100,00 |
 | Thijsse, Jac.P. | € 9,00 |
 | Thorburn, Archibald | € 20,00 |
 | Tijssen-van 't Kruis, T. | € 5,00 |
 | Tolman, Rinke | € 5,00 |
 | Tory Peterson, Roger | € 12,50 |
 | Trotman, Colin | € 30,00 |
 | Tuck, Leslie M. | € 15,00 |
 | Tudge, Colin | € 15,00 |
 | Turner, William & A.H. Evans (editor) | € 30,00 |
 | Tyler, Stephanie J. | € 6,00 |
 | Valk, A. | € 5,00 |
 | Varesvuo, Markus | € 10,00 |
 | Various | € 5,00 |
 | Verdet, Pierre | € 15,00 |
 | Vergeer, Jan-Willem | € 5,00 |
 | Verheyen, René & Rudolf Verheyen (revu et complété par) & Paul De Vree (planches) | € 80,00 |
 | Vesey-Fitzgerald, Brian & Allen W. Seaby (colour illustrations by) | € 5,00 |
 | Viner, Bradley | € 5,00 |