Żubr i jego ochrona. Biuletyn. Vol. 3 (2010)
06.06.2010Daleszczyk K., Czykier E. „Do European bison bulls in Bialowieza Forest differ in their rutting behaviour depenfing on age” Czykier E., „Comparsion of concentration of 17 B-estradiol (E2) and total testosterone (TT) in serum in young males of European bison with or withaut spermiogenesis” Khoyetskyy P., „Causes...