Overduin, P. G. J.Boshoff, A. B.De Bruin, Hendrik2016-02-032016-02-031984-011984-012016-02-02http://hdl.handle.net/11660/2257Abstract not availableafThesis (D.Bibl. (Library and Information Science))--University of the Free State, 1984Academic libraries -- South AfricaThesisUniversity of the Free State