Complex sentence: Prof. Gustave von Grunebaum had already recruited Kerr for a teaching post at the University of California at Los Angeles (U.C.L.A.); his career matured over the course of twenty years there, 1962 to 1982.
Split into simpler sentences: Prof. Gustave von Grunebaum had already recruited Kerr for a teaching post at the University of California at Los Angeles (U.C.L.A.). There his career matured over the course of twenty years, 1962 to 1982.