Question: Frank Albert Fetter, was an American economist of the Austrian School, Fetter's treatise, "The Principles of Economics", contributed to an increased American interest in the Austrian School, including the theories of Friedrich Hayek, was an Austrian-British economist and philosopher best known for his defense, of classical what?
Context: Theodore A. Burczak (born August 15, 1964) is an American economist and a professor of economics at Denison University in Granville, Ohio, where he teaches courses on macroeconomics, economic justice, monetary theory, and the history of economic thought.  He is best known for his development of a socialist economic model designed to bypass the dispersed knowledge problems elaborated on by Friedrich Hayek as facets of the economic calculation problem, writing in his book "Socialism After Hayek (Advances in Heterodox Economics)", "my aim...is developing a 'libertarian Marxist' conception of socialism, a socialism committed to forms of procedural and distributive justice that are central to the Marxian tradition and a socialism keenly aware of the factual and ethical knowledge problems emphasized by Hayek." Friedrich Freiherr von Wieser (] ; 10 July 1851 – 22 July 1926) was an early (so-called "first generation") economist of the Austrian School of economics.  Born in Vienna, the son of Privy Councillor Leopold von Wieser, a high official in the war ministry, he first trained in sociology and law.  In 1872, the year he took his degree, he encountered Austrian-school founder Carl Menger's "Grundsätze" and switched his interest to economic theory.  Wieser held posts at the universities of Vienna and Prague until succeeding Menger in Vienna in 1903, where, with brother-in-law Eugen von Böhm-Bawerk, he shaped the next generation of Austrian economists including Ludwig von Mises, Friedrich Hayek and Joseph Schumpeter in the late 1890s and early 20th century.  He was the Austrian Minister of Commerce from August 30, 1917 to November 11, 1918. Peter Joseph Boettke ( ; born January 3, 1960) is an American economist of the Austrian School.  He is currently a University Professor of Economics and Philosophy at George Mason University; the BB&T Professor for the Study of Capitalism, Vice President for Research, and Director of the F.A. Hayek Program for Advanced Study in Philosophy, Politics, and Economics at the Mercatus Center at GMU. Frank Albert Fetter ( ; March 8, 1863 – March 21, 1949) was an American economist of the Austrian School.  Fetter's treatise, "The Principles of Economics", contributed to an increased American interest in the Austrian School, including the theories of Eugen von Böhm-Bawerk, Friedrich von Wieser, Ludwig von Mises and Friedrich Hayek. The Austrian business cycle theory (ABCT) is an economic theory developed by the Austrian School of economics about how business cycles occur.  The theory views business cycles as the consequence of excessive growth in bank credit, due to artificially low interest rates set by a central bank or fractional reserve banks.  The Austrian business cycle theory originated in the work of Austrian School economists Ludwig von Mises and Friedrich Hayek.  Hayek won the Nobel Prize in economics in 1974 (shared with Gunnar Myrdal) in part for his work on this theory. Friedrich Hayek CH ( ; ] ; 8 May 189923 March 1992), born in Austria-Hungary as Friedrich August von Hayek and frequently referred to as F. A. Hayek, was an Austrian-British economist and philosopher best known for his defense of classical liberalism.  Hayek shared the 1974 Nobel Memorial Prize in Economic Sciences with Gunnar Myrdal for his "pioneering work in the theory of money and economic fluctuations and ... penetrating analysis of the interdependence of economic, social and institutional phenomena." Carl Menger ( ; ] ; February 23, 1840 – February 26, 1921) was an Austrian economist and the founder of the Austrian School of economics.  Menger contributed to the development of the theory of marginalism (marginal utility), which rejected the cost-of-production theories of value, such as were developed by the classical economists such as Adam Smith and David Ricardo.  Menger used his “Subjective Theory of Value” to arrive at what he considered one of the most powerful insights in economics: both sides gain from exchange. Donald Charles "Don" Lavoie (April 4, 1951 – November 6, 2001) was an Austrian school economist.  He was influenced by Friedrich Hayek, Hans-Georg Gadamer, Michael Polanyi and Ludwig Lachmann.  He wrote two books on the problem of economic calculation.  His first book on this subject was "Rivalry and Central Planning" (Cambridge University Press 1985).  This book stressed the importance of the process of competitive rivalry in markets.  His second book was "National Economic Planning: What Is Left?"  (Cambridge, Massachusetts: Ballinger Publishing Company, 1985).  This book dealt with the problem of non-comprehensive planning. Murray Newton Rothbard ( ; March 2, 1926 – January 7, 1995) was an American economist, philosopher, political theorist, and historian.  He was a heterodox economist of the Austrian School, a historian, and a political theorist whose writings and personal influence played a seminal role in the development of modern libertarianism.  Rothbard was the founder and leading theoretician of anarcho-capitalism, a staunch advocate of historical revisionism, and a central figure in the twentieth-century American libertarian movement.  He wrote over twenty books on political theory, revisionist history, economics, and other subjects.  Rothbard asserted that all services provided by the "monopoly system of the corporate state" could be provided more efficiently by the private sector and wrote that the state is "the organization of robbery systematized and writ large."  He called fractional-reserve banking a form of fraud and opposed central banking.  He categorically opposed all military, political, and economic interventionism in the affairs of other nations.  According to his protégé Hans-Hermann Hoppe, "There would be no anarcho-capitalist movement to speak of without Rothbard." This is the chronological list of books by the Austrian school economist and philosopher Friedrich Hayek.  The dates in brackets are the original year of publication of the book (not always in English).
Answer: liberalism