Alfred Marshall (1842-1924) was one of the most influential economists of his generation. His book, Principles of Political Economy (1890) brought together the theories of supply and demand, marginal utility and the costs of production[?] into a coherent whole. It was the dominant textbook in England for a long period.
... problems of the urethra:
Hypospadias[?] is a form of abnormal development of the urethra in the male, where the opening is not quite where it should be (it occurs ...