00365nam a22001337a 450000500170000000800410001702000080005804100080006608200170007410000210009124500570011226000480016930000140021720260707151411.0260707b        |||||||| |||| 00| 0 eng d  a000  aeng  a330.9bGRA/T  aGreaaff, J.De V.  aTheoretical Welfare Economicsc/ by  J. De V. Graaff  aLondon:bCambridge University Press,c1963.  ax, 178p.;