00422nam a22001457a 450000500170000000800410001702000180005804100080007608200170008410000230010124500790012426000390020330000100024270000240025220260422112254.0260422b        |||||||| |||| 00| 0 eng d  a3-540-09088-6  aeng  a658.4bBEC/L  aBeckman, Martin J.  aLecture Notes in Economic and Mathematical Systemsc/by Martin J. Backmann  aNew York:bSpringer-Verlag;c1978.  a164p.  aBackmann, Martin J.