Abstract:
Name list: Front (from left to right): Dr G de Kock, Mr DA Haig (Warden), Dr PJ du Toit, FJ Veldman, Dr JB Quinlan ; Second row: FE Cavanagh, JD Smit, PJ Goosen, I Mowat, JP Moll, JS van Heerden ; Third row: BM McIntosh, VR Kaschula, RK Loveday, SL Snyders, DE Osbourn
