Studies in income and wealth v.9-15.

Udgivet: New York, National Bureau of Economic Research, 1947 etc.
Sınıf Numarası: E/339 CON

Business cycles and forecasting. 5th ed.

af Bratt, Elmer Clark
Udgivet: Homewood, III., R.D. Irwin, 1961.
Sınıf Numarası: E/338.54 BRA