000 003260000a22001450004500
008 140223b1975 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _aX L5
082 _aX L5
100 _aAlderson L P
700 _aMarder K B
245 _aEconomic society
260 _aLondon
_bOUP
_c1975
650 _aEconometrics
999 _c150393
_d150393