00319    a2200109   450000500170000002000180001708200160003510000140005124500480006526000590011330000370017220250424164015.0  a0-278-00030-4  a657. 42 DRU  aDRURY, C.  aCosting: An introduction.  Teachers' Manual  aBerkshire,bVan Nostrand Reinhold (UK) Co. Ltd,c1987.  avii, 106p.: ill.; figure.c25cm.