000 00311nam a22001097a 4500
008 120711b xxu||||| |||| 00| 0 eng d
050 _aQA39.2
_b.G46 1987
100 _aGERSTEIN
245 _aDISCRETE MATHEMATICS AND ALGEBRAIC STRUCTURES
300 _a18
942 _2lcc
_cBK
_hQA39.2.G46 1987
999 _c65043
_d65043