This major two volume reference work focuses on the works of contemporary Marxism which take as their inspiration the classical Marxian political economy, especially that of Marx, Engels, Lenin, Luxemburg and Gramsci. The authors reprinted here are engaged in the common enterprise of attempting to understand the world in a manner that might facilitate its transformation for the better, or at least help prevent the worst outcomes from predictable and inevitable changes. Committed to the critical, scientific and explanatory project of Marxism, the authors represented in these volumes tend to be structuralist and determinist but they also acknowledge the role of voluntarism, chance or untheorized circumstance. All have borrowed from the philosophical, political, and most importantly, political economic strands of the classical Marxist legacy to create a new and contemporary Marxian political economy. These authoritative volumes will be an essential reference point for an analysis of one of the most influential political ideologies of the 20th century.