00421nam a2200157Ia 450000100060000000800410000602000150004704000130006208200190007510000200009424500580011426000470017230000110021954600070023065000260023741930140424s9999    xx            000 0 und d  a0064601803  cPK-LaUMT  aG 519.5bZEP-B  aZepke, Brent E.  aBusiness statisticsban introductioncZepke, Brent E.  aNew York,USA:bBarnes & Noble Books,c1980  a230 p.  aEN  aCommercial statistics