000 00263nam a2200121 4500
082 _a370
_bWAR.E
084 _2Colon Classification
100 _aWarner
245 _aEconomics /
_cWarner
260 _c1974.
_aNonarch press,
650 _aEconomics
942 _cBK
999 _c682256
_d682256