Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Van der Flaas, Mark" or (type exact bookEditor and editor="Van der Flaas, Mark") Add to list Journal Article A1 Chemical constituents and biological activities of Zanthoxylum usambarense Weidong He, Luc Van Puyvelde, Norbert De Kimpe (UGent) , Luc Verbruggen, Kristel Anthonissen, Mark Van der Flaas, Jan Bosselaers, Simon G Mathenge and Francis P Mudida (2002) PHYTOTHERAPY RESEARCH. 16(1). p.66-70