I started [in 1921] to write on the foundations of an approach to international trade theory that was to some extent new and for which I received the… - Bertil Ohlin

I am presently at work on a dissertation dealing with the theory of international trade and foreign exchange rates. In dealing with this, studies of the intervention of recent years in the area of trade and exchange rates of different countries is of the greatest importance. I therefore hope to be able to begin a six month study tour to Switzerland, France and England at the end of May this year. After having collected the necessary material I intend — if the economic side can be arranged — during a stay of 6–12 months in England (probably Cambridge) or possibly the United States (in that case probably Harvard University) — to work out the above mentioned dissertation as a specimen for the doctoral degree in philosophy and pursue studies in general. I have not yet any detailed study plan. That should appropriately be set up after the arrival.

The productive factors enter into the production of different commodities in very different proportions.

The economic history of the last half century offers two cases of serious international depressions in countries with an essential orientation towards a market economy: In the first half of the 1930ies and in the middle of the 1970ies. With some simplification one can say that in the former case recovery started after a few years without the aid of much conscious expansionist policy.