Benn, Michael H.Were, Obuya Stevens2005-07-272005-07-2719910315752599http://hdl.handle.net/1880/24617Bibliography: p. 174-182.xvi, 182 leaves ; 30 cm.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.QK 495 C74 W47 1991Senecio - Africa, EastSenecio - CanadaPyrrolizidinesdoctoral thesis10.11575/PRISM/20375QK 495 C74 W47 1991