About
Boer studied, taught and/or researched:
- Calvin College (USA) 1958-1962
- Calvin Theological Seminary (USA) 1962-1965
- Michigan State University (USA) -- African studies 1965-1966
- Pierre Benignus Study Centre, (Nigeria) -- Islamics 1967
- Vrije Universiteit (The Netherlands) -- Missiology 1972-1974
- Research Fellow 1973-1974
- Awarded Th. D. 1979
- Cecil Rhodes Library, Oxford (UK) 1973
- University of Jos (Nigeria) -- Lecturer in Ethics 1978-1979
- Calvin Theological Seminary -- Lecturer in graduate course on Missiology 1981
- Theological College of Northern Nigeria 1993-1996