Mande-Manding : background reading for ethnographic research in the region south of Bamako (Mali) / [a collection of essays assembled by Jan Jansen]The world of water : the international course on water use and management in Cagayan Valley, The Philippines (2011-2015) / editors Merlijn van Weerd, Jouel Taggueg, Sabine Luning, Mercedes Masipiqueña, Renske Kok, Marites Gatan-Balbas, Nina Osterhaus-Smić, Gerard Persoon ; English language editor: Anna Yeadell-MooreThe mermaid and the lion king : essays in honour of Hans H. de Iongh / edited by Gerard Persoon and Merlijn van Weerd