35. Taha, E. K. A., Rakha, O. M., Elnabawy, E. S. M., Hassan, M. M., & Shawer, D. M. (2021). Comb age significantly influences the productivity of the honeybee (Apis mellifera) colony. Journal of King Saud University-Science, 33(4): 101436. https://doi.org/10.1016/j.jksus.2021.101436