| Bulbous plants of southern Africa NM DuPlessis, G Duncan, B Bayer, E Bodley Tafelberg, 1989 | 155 | 1989 |
| A method for the measurement of L-phenylalanine mustard in the mouse and dog by high-pressure liquid chromatography. RL Furner, LB Mellett, RK Brown, G Duncan Drug Metabolism and Disposition 4 (6), 577-583, 1976 | 58 | 1976 |
| The Loch Eil project: population fluctuations in the macrobenthos TH Pearson, G Duncan, J Nuttall Journal of Experimental Marine Biology and Ecology 56 (2-3), 305-321, 1981 | 50 | 1981 |
| The native school that caused all the trouble: A history of the Federal Theological Seminary of Southern Africa P Denis, GA Duncan Cluster Publications, 2011 | 45 | 2011 |
| Long term changes in the benthic communities of Loch Linnhe and Loch Eil (Scotland) TH Pearson, G Duncan, J Nuttall Long-Term Changes in Coastal Benthic Communities: Proceedings of a Symposium …, 1987 | 42 | 1987 |
| Pharmacokinetics of the absorption, distribution, and elimination of melphalan in the dog. RL Furner, RK Brown, G Duncan Cancer Treatment Reports 61 (9), 1637-1646, 1977 | 38 | 1977 |
| Lovedale, coercive agency: Power and resistance in mission education GA Duncan Cluster Publications, 2003 | 37 | 2003 |
| Bakuzufu: revival movements and indigenous appropriation in African Christianity G Duncan, OU Kalu African Christianity: An African Story, 245-269, 2007 | 25 | 2007 |
| Inculturation: adaptation, innovation and reflexivity. An African Christian perspective GA Duncan HTS: Theological Studies 70 (1), 1-11, 2014 | 23 | 2014 |
| Ethiopianism in pan-African perspective, 1880-1920 GA Duncan Studia Historiae Ecclesiasticae 41 (2), 198-218, 2015 | 22 | 2015 |
| A Place in the Sun?: The role of the Church in moral renewal and social transformation GA Duncan Verbum et ecclesia 23 (2), 333-342, 2002 | 20 | 2002 |
| Scottish Presbyterian Church mission policy in South Africa, 1898-1923. GA Duncan | 20 | 1998 |
| Partnership in mission: a critical historical evaluation of the relationship between ‘older’and ‘younger’churches with special reference to the World Mission Council policy of … GA Duncan PQDT-Global, 2007 | 19 | 2007 |
| Historiography and ideology in the (mission) history of Christianity in Africa GA Duncan Church History Society of Southern Africa, 2005 | 19 | 2005 |
| Theological education: Mission birth-African Renaissance GA Duncan Missionalia: Southern African Journal of Mission Studies 28 (1), 23-40, 2000 | 16 | 2000 |
| Celtic spirituality and contemporary environmental issues G Duncan HTS: Theological Studies 71 (3), 1-10, 2015 | 15 | 2015 |
| John Knox and education GA Duncan HTS: Theological Studies 73 (3), 1-9, 2017 | 11 | 2017 |
| Gateway to the future oopmaak van die hekke Transformation in the Faculty of Theology, University of Pretoria GA Duncan HTS Theological Studies 72 (4), 1-12, 2016 | 11 | 2016 |
| ’African Churches Willing to Pay Their Own Bills’: The Role of Money in the Formation of Ethiopian-type Churches with Particular Reference to the Mzimba Secession GA Duncan African Historical Review 45 (2), 52-79, 2013 | 11 | 2013 |
| Steve Biko's religious consciousness and thought and its influence on theological education with special reference to the Federal Theological Seminary of Southern Africa G Duncan The legacy of Stephen Bantu biko: Theological challenges, 115-140, 2008 | 11 | 2008 |
