.Grubel, H. G. (1981). International economics. R.D. Irwin.
Chicago Style (17th ed.) Citation.Grubel, Herbert G. International Economics. Homewood, Ill.: R.D. Irwin, 1981.
MLA (9th ed.) Citation.Grubel, Herbert G. International Economics. R.D. Irwin, 1981.
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