00301nam a2200109Ia 4500082001900000100004000019245005100059260003200110300001300142500000500155700003100160  a339.3bR932.NI  aRuggles, Richard and Ruggles, N. D.  aNational income accounts and income analysisb  aNew YorkbMcGraw-Hillc1956  ax, 452p.  a  aRuggles, N. D. ; jt. auth.