Holm, E.2013-09-072008-02-042013-09-071988-05-0119882008-02-04Du Toit, AP 1988, The pollination ecology of commercial sunflower (Helianthus annuus L.) in South Africa with special reference to the honeybee (Apis mellifera L.), MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/26786>Pretoriahttp://hdl.handle.net/2263/26786Dissertation (MSc (Entomology))--University of Pretoria, 1988.Please read the abstract (Summary) in the section, 09summary and aknowledgements, of this document© University of PretorInsects as pollinatorsHelianthus annuus lHoneybees as pollinatorsCommercial sunflower pollination ecologyHoneybee (Apis mellifera)UCTDDissertationhttp://upetd.up.ac.za/thesis/available/etd-02042008-122112/