000 00319nam a22001337a 4500
008 180201b xxu||||| |||| 00| 0 eng d
020 _a3540152296
041 _aeng
080 _a330
100 _a52
101 _aEKO
245 _aLecture Notes in Economics and Mathematical Systems
_cBeckmann, M
942 _2udc
_cBK
999 _c41489
_d41489