000 00190 a2200085 4500
020 _a9781111534639
082 _a519.5 KELL
100 _aGerald Keller
_9176418
245 _aManagerial statistics
999 _c745463
_d745462
942 _w395
_xKholofelo Moabelo
_y395
_zKholofelo Moabelo