Propolis
- ↑ Nuru, A., Hepburn, H. R., & Radloff, S. E. (2002). Induction of propolis production by Apis mellifera bandasii in traditional basket and Langstroth movable-frame hives in Ethiopia. Journal of Apicultural Research, 41(3-4), 101–106. https://doi.org/10.1080/00218839.2002.11101076