00279nam a2200109Ia 4500008004100000082001800041100001600059245003000075250001300105260004100118300001000159240919b        |||||||| |||| 00| 0 eng d  a330bSe495.PE  aSeth, M. L.  aPrinciples of economics /  a7th rev.  aAgra:bLakshmi Narain Agarwal,c1969  a638p.