00241nam a2200109Ia 450000500170000008000190001724500230003626000290005930000130008858300190010165000110012020260716043739.0  a08.13.01 S7271  aProtocol on mining  bSADCaGaboroneBWc[199?]  ai, 17 p.  c10/30/06kJOYD  aMINING