Business and economic forecasting : an econometric approach / [by] Milton H. Spencer, Colin G. Clark [and] Peter W. Hoguet. Spencer, Milton H. Business forecasting. HB3730 .S56 338.544 SPB Includes bibliographycal references Homewood : R.D. Irwin, 1961. 1961. 1961 Text xii, 412 p. : eng The Irwin series in economics Irwin series in economics.