UNIVERSITY OF JOHANNESBURG

I would like to express my sincere thanks to the following people: Prof. Jan A. du Rand, firstly for giving me a hearing when I ventured into his office at the Rand Afrikaans University, now The University of Johannesburg, in February 2000 and expressed my intentions to complete my doctorate and, secondly, for his tireless encouragement and promotion of this research. To The University of Johannesburg, for granting the bursary, which made this research possible. To my lifetime friend, sole mate and wife, Rhoda, my son Roger, Ronel Smith for her assistance in obtaining research material, Amarily (Amy) Ackerman and Tammy Bell for typing perhaps the most illegible and indecipherable handwritten manuscript ever! Last, but not least, Clarence Prinsloo for his assistance with typing and Yvonne Pawlowski and Elza Verster for being prepared at short notice to edit the thesis. To the rest of my immediate family: sons, daughters, sons-in-law and daughters-in-law, as well as my sweet grandchildren for fulfilling my life, and helping me to do it my way. I am also indebted to Astrid Schaum for assistance in helping me to translate texts from German reference books into English. Of course, prior studies played an important role in this research. I therefore would like to thank my lecturers at RAU and UNISA, where I had the opportunity to study courses which would later relate t