We thank Katja Anker, Quan Mai, Sibyle Moulin, Jean-Christophe Levet, Pham Van Giau, Nguyen Thanh Hai, Phan Van Hung, and other staff of local authorities for their contributions to and help with fieldwork. We are grateful to Thierry Bourgoin, Henri Dalens, Thierry Deuve, Arnaud Faille,...