00370nam a2200121Ia 4500008004100000040001700041082002300058100002000081245006100101260003100162300001500193650004000208190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta330.9bB592N  aBiggs, Robert M 0aNational income analysis and forecastingcRobert M Biggs  aNew YorkbW W Nortonc1956  axxi, 610p.  aNational income; Income forecasting