| Roy, Christian le | € 8,00 |
| Ruijter, Elsje de | € 6,00 |
| Ruiter, F.G. de | € 6,00 |
| Rücker, Elisabeth | € 6,00 |
| Sanderson, Ivan T. | € 5,00 |
| Scarth, Alwyn | € 10,00 |
| Scarth, Alwyn & Jean-Claude Tanguy | € 15,00 |
| Scherren, Henry | € 12,50 |
| Schierbeek, A. | € 5,00 |
| Schildkamp, Theo | € 5,00 |
| Schuring, Harry | € 6,00 |
| Schuring, Harry - e.a. (redactie) | € 8,00 |
| Schut, Bert | € 5,00 |
| Schwartz, Jeffrey H. | € 10,00 |
| Sheffield, Charles | € 6,00 |
| Sheldrick, Janis | € 35,00 |
| Silvester, Hans | € 15,00 |
| Silvester, Hans | € 15,00 |
| Singh, Madanjeet | € 20,00 |
| Sliggers, Bert | € 15,00 |
| Sluis, Theo van der | € 12,50 |
| Soule, Gardner | € 10,00 |
| Southwood, Richard | € 10,00 |
| Stastny, Karel en Vladimir Bejcek | € 6,00 |
| Steene, Roger | € 10,00 |
| Stichmann-Marny, Ursula | € 10,00 |
| Stonehouse, Bernard | € 10,00 |
| Stoppato, Marco C. & Bini, Alfredo | € 8,00 |
| Stow, Dorrik | € 10,00 |
| Tack, Francis & Paul Robin | € 17,50 |
| Tazieff, Haroun | € 10,00 |
| Theberge, Captain Albert E. - a.o. | € 10,00 |
| Thijsse, Jac. P. | € 20,00 |
| Thimm, Inge | € 25,00 |
| Tienhoven, mr. P.G. van | € 10,00 |
| Tinbergen, Joost | € 10,00 |
| Tol, J. van | € 5,00 |
| Truffer, Beat P | € 5,00 |
| Turnhout, S. & L. van Gent & M. Reemer & E.Turnhout (redactie) | € 8,50 |
| Various | € 10,00 |
| Veen, Cees van 't (introduction) | € 12,50 |
| Veen, Cees van 't (voorwoord) | € 10,00 |
| Verhagen, H.J. - en anderen | € 10,00 |
| Vermeer, Jan | € 6,00 |
| Visscher, H.A. | € 5,00 |
| Vos, J.A. de & Blankena, G.J. | € 5,00 |
| Vriends, Jan | € 5,00 |
| Vries, Bernhard de | € 20,00 |
| Wagner, Georg | € 5,00 |
| Wagner, Hermann | € 45,00 |
| Walker, Richard | € 10,00 |
| Watson, James D. (editor) | € 12,50 |
| Watson, Peter | € 10,00 |
| Watson, Peter | € 10,00 |
| Wells, Martin | € 10,00 |
| Wells, Spencer | € 8,00 |
| Wells, Sue | € 10,00 |
| Welsh, Mary | € 9,00 |
| Werner, A.G. | € 10,00 |
| West, Geoffrey | € 12,50 |
| Wheelwright, Horace William | € 12,50 |
| Whitehead, Peter & Colin Keates | € 6,50 |
| Wijlen, Ton van | € 5,00 |
| Wijnen, Jo & Collin, Martin | € 8,00 |
| Willems, Jaap | € 5,00 |
| Winkel, Dos | € 9,00 |
| Winkler, Dr. T.C. | € 10,00 |
| Winkler, dr. T.C. | € 75,00 |
| Wit, H.C.D. de (edited by) & Rumphius, G. | € 150,00 |
| Witchell, Charles A. | € 10,00 |
| Wood, A.J. & Clint Twist | € 10,00 |
| Yonge, C.M. | € 10,00 |
| Zeiler, Frits David | € 12,50 |
| Zinderen Bakker, E.M. van | € 5,00 |