Alfred Marshall (1842-1924) is considered as one of the most influential
economists of his time. His specialty was microeconomics - the study of
individual markets and industries, as opposed to the study of the whole
economy. His most important book was "Principles of Economics" (1890),
which was for many years the Bible of British economics. Marshall was
the first principal of University College, Bristol (1877-81), and a
professor at the University of Cambridge (1885-1908), he reexamined and
extended the ideas of classical economists such as Adam Smith and David
Ricardo.