00424cam a2200169Ma 4500 ocn819371788 OCoLC 20141007085032.0 820930s1981 sa 000 f afr d 0868143588 9780868143583 (OCoLC)819371788 NX@ NX@ OCLCO 839.3635 22 Botha, P. W. (Petrus Wilhelmus) 68533 Bulla / P.W. Botha. 26590 26590