Population structure and classification of Apis cerana Sarah E. Radloff, Colleen Hepburn, H. Randall Hepburn, Stefan Fuchs, Soesilawati Hadisoesilo, Ken Tan, Michael S. Engel and Viktor Kuznetsov Apidologie, 41 6 (2010) 589-601 Published online: 15 March 2010 DOI: 10.1051/apido/2010008