000 00269nam a22001217a 4500
008 190129b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a510
100 _a36
101 _aMAT
245 _aMathematical Methods in Science
_cPolya,G
942 _2udc
_cBK
999 _c53822
_d53822