00298nam a2200109Ia 450000500170000000800410001704000100005805000140006810000190008224500530010126000340015420251229190500.0251229s9999    xx            000 0 und d  cEULIB  aQA 37 .M6  aMorley Richard 0aMathematics for modern economicscRichard Morley  aBungaybFontana/Collinsc1972