By Boer, Esther de, Bowden, John
By Hoppenfeld, Stanley, Boer, Piet de, deBoer, Piet
By Boer, Johan Antonie den
By Teare, Richard, Boer, Andrew
By Öztürk, Munir, Boer, Benno, Barth, Hans-Jörg, Breckle, Siegmar-W., Clüsener-Godt, Miguel, Khan, M. Ajmal
By Aiking, Harry, Boer, Joop de, Vereijken, Johan
By Gul, Bilquees, Boer, Benno, Khan, M. Ajmal, Clüsener-Godt, Miguel, Hameed, Abdul
By Amer, Kamel, Adeel, Zafar, Boer, Benno, Saleh, Walid
By Boer, Johan A. den; Sitsen, J. M. Ad (eds.)