000 nam a22 7a 4500
999 _c184693
_d184693
005 20190111092231.0
008 190111b1957 xxu||||| |||| 00| 0 eng d
040 _cFM
082 _a15.205
100 _aMason, Edward S.
_96240
245 _aEconomic Concentration and the Monopoly Problem
260 _aCambridge
_bHarvard University Press
_c1957
300 _a411 S.
_cI
942 _cB