Fred Manville Taylor's book, "Principles of Economics", follows the lineage of which 19th century economist?
Fred M. Taylor: Fred Manville Taylor (July 11, 1855, Northville, Michigan – August 7, 1932) was a U.S. economist and educator best known for his contribution to the theory of market socialism. Fred M. Taylor:  Of a libertarian ideology, he was noted as a clear and rigorous expositor of economic theory in the partial-equilibrium lineage of Alfred Marshall. Alfred Marshall: Alfred Marshall (26 July 1842 – 13 July 1924) was one of the most influential economists of his time.
Alfred Marshall