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1by Gobin, Anne, Kersebaum, Kurt Christian, Eitzinger, Josef, Trnka, Miroslav, Hlavinka, Petr, Takáč, Jozef, Kroes, Joop, Ventrella, Domenico, Dalla Marta, Anna, Deelstra, JohannesArticle/Letter to editor bibliotecaWUR NL
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2by Kersebaum, Kurt Christian, Kroes, Joop, Gobin, Anne, Takáč, Jozef, Hlavinka, Petr, Trnka, Miroslav, Ventrella, Domenico, Giglio, Luisa, Ferrise, Roberto, Moriondo, Marco, Marta, Anna Dalla, Luo, Qunying, Eitzinger, Josef, Mirschel, Wilfried, Weigel, Hans Joachim, Manderscheid, Remy, Hoffmann, Munir, Nejedlik, Pavol, Iqbal, Muhammad Anjum, Hösch, JohannesArticle/Letter to editor bibliotecaWUR NL
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3by Schils, René, Olesen, Jørgen E., Kersebaum, Kurt Christian, Rijk, Bert, Oberforster, Michael, Kalyada, Valery, Khitrykau, Maksim, Gobin, Anne, Kirchev, Hristofor, Manolova, Vanya, Manolov, Ivan, Trnka, Mirek, Hlavinka, Petr, Paluoso, Taru, Peltonen-Sainio, Pirjo, Jauhiainen, Lauri, Lorgeou, Josiane, Marrou, Hélène, Danalatos, Nikos, Archontoulis, Sotirios, Fodor, Nándor, Spink, John, Roggero, Pier Paolo, Bassu, Simona, Pulina, Antonio, Seehusen, Till, Uhlen, Anne Kjersti, Żyłowska, Katarzyna, Nieróbca, Anna, Kozyra, Jerzy, Silva, João Vasco, Maçãs, Benvindo Martins, Coutinho, José, Ion, Viorel, Takáč, Jozef, Mínguez, M.I., Eckersten, Henrik, Levy, Lilia, Herrera, Juan Manuel, Hiltbrunner, Jürg, Kryvobok, Oleksii, Kryvoshein, Oleksandr, Boogaard, Hendrik, de Groot, Hugo, Lesschen, Jan Peter, van Bussel, Lenny, Wolf, Joost, Zijlstra, Mink, van Loon, Marloes P., van Ittersum, Martin K.Article/Letter to editor bibliotecaWUR NL