00332nam a2200121Ia 4500082002300000100002100023245004500044260003400089300001600123490006100139500000500200700000500205  a658.40331bR195.IT  aRandow, Rabe Von  aIntroduction to the theory of matroidsb  aBerlinbSpringer-Verlagc1975  aviii, 102p.  aLecture notes in Economics and Mathematical systems, 109  a  a