000 00336nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a1
082 _b642 HE
100 _a"Helman, Paul"
245 0 _aIntermediate Problem Sol
260 _aSingapore
260 _bThe Benjamin/Cummings Pu
260 _c1986
300 _a"xxi, 612"
999 _c25868
_d25868