[1]
Erkara, I.P., Ocak, A. and Pehlivan, S. 2008. Pollen morphology of some Turkish <i>Campanula</i> spp. and their taxonomic value. Bangladesh Journal of Botany. 37, 1 (Nov. 2008), 33–42. DOI:https://doi.org/10.3329/bjb.v37i1.1561.