000 00299nam a2200121 4500
008 160616s 000 0
245 _aMethods of coordinates
100 _aGelfand, I.M.
440 _aLibrary of school mathematics, 1
500 _aB6:23 K7
942 _cBK
_2BK2859
080 _a514.74 GEL
999 _c2859
_d2859