de Sá-Otero, M.P. and Armesto-Baztán, S. 2018. Studying the Daily Harvesting of Pollen by Apis mellifera (Galicia-NW Spain). Pollen Foraging Pattern from Several Sources. Global Journal Of Botanical Science. 6, (May 2018), 5–18. DOI:https://doi.org/10.12974/2311-858X.2018.06.01.2.