Conventional growth curves, such as the logistic and Gompertz, though both useful and successful as descriptive measures, lack economic substance. Where a new product is developed expressly to compete with an existing close substitute, any economist might reasonably expect the relative prices of...

The United States occupies a rather unique position in the world wool trade - besides being one of the world's largest apparel wool producers, she also needs to supplement her requirements by sizeable imports from wool surplus countries. However, wool imports into the U.S. have a strong...