000 00321nam a2200133Ia 4500
008 130629s9999 xx 000 0 und d
082 _a330.12 TYA-E
100 _aTyagi,B P
245 _aEconomic Systems
260 _bJai Prakash Nath Publications
_c1977
_aMeerut
300 _a264
650 _aEconomics
942 _cBK
999 _c17457
_d17457