What obstacles prevent the most productive technologies from spreading to less developed economies from the world … distances between populations, and document how such distances, relative to the world’s technological frontier, act as barriers …

What obstacles prevent the most productive technologies from spreading to less developed economies from the world … distances between populations, and document how such distances, relative to the world's technological frontier, act as barriers …

What obstacles prevent the most productive technologies from spreading to less developed economies from the world … distances between populations, and document how such distances, relative to the world's technological frontier, act as barriers …