Just to add some more dimensions. The question also relates to where = the "bestseller" was sold. I seem to remember being told that Bowley's = textbook on Mathematical Economics was a "bestseller" in the Soviet = Union in the late 1920s and early 1930s. Indeed, it was one of the only = economics texts allowed to be imported into the USSR during that period. = The version was not a translation. And what about "translations"? How should they be counted? Warren Young