27 fa9ea86b-aec6-413c-a05b-5a080729f938 Leadership OS: The Operating System You Need to Succeed Nik Kinley Shlomo Ben-Hur calibre (8.8.0) [https://calibre-ebook.com] 0101-01-01T00:00:00+00:00 Springer International Publishing 9783030272937 eng