Proceedings of the conference on learning difficulties and teaching strategies in secondary school science and mathematics held at Gaborone, Botswana, 8-11 December 1987 - Conference on Learning Difficulties and teaching Strategies in Secondary School Science and Mathematics (1987 : Gaborone, Botswana); Thijs, G.D.; Center for Development Copperation Services (Amsterdam Free University Press, 1987)
Keywords: Science -- Study and teaching -- Congresses; Mathematics -- Study and teaching -- Congresses