@article{oai:tsukuba.repo.nii.ac.jp:00049543, author = {GUIDO, Geisler and AMAN, Shah}, journal = {筑波大学体育系紀要, The bulletin of Faculty of Health and Sport Sciences}, month = {Mar}, pages = {103--108}, title = {Youth Training and Development at Professional German Football Academies : A Practical Study of 1.FC Union, Berlin}, volume = {42}, year = {2019} }