Complex sentence: Seungpil Yu attended Columbia University Business School from 1969 to 1971 and graduated with a M.B.A. and also in 1973 to 1979 and graduated with a Ph.D. in International Business Administration.
Split into simpler sentences: Seungpil Yu attended Columbia Business School from 1969 to 1971 and graduated with an MBA, followed by study for a PhD between 1973 and 1979. He graduated with a Ph.D. in International Business Administration.