000 00284nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aSukhpal Singh & K.K. Sharma
245 0 _aProce Theory & Distribution
260 _aChandigarh
_bUnistar
_c1997
650 _aEconomics
942 _cBK
999 _c15721
_d15721