Sosnówka-Czajka E, Skomorucha I. Selected blood parameters in organically raised hens fed with purple coneflower supplemented diet**. AUPCStudiaNaturae [Internet]. 2018 Dec. 31 [cited 2024 May 19];3(2):72–82. Available from: https://aupcstudianaturae.uken.krakow.pl/article/view/5517