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Friedrich Engels
Karl Marx
Edward Bibbins Aveling
Friedrich MARX Karl & ENGELS
MARX, Karl & ENGELS, Friedrich
F. Engels
F. Engels K. Marx

See also:

Engels, Friedrich, 1820-1895, Aveling, Edward Bibbins, 1851-1898
Karl(Author); Blaisdell, Bob(Editor); Marat(Joint Author) Marx
Engels Friedrich; Aveling Edward Bibbins
Engels, Friedrich, and Aveling, Edward (Translated by), and author (special intro)
Edited By Lewis S. ; Karl Marx, Friedrich Engels Feuer
MARX, KARL & ENGELS, FRIEDRICH & LENIN, VLADIMIR