The significance and vital force of the teachings of Karl Marx for our era. Speech [for the] International scientific session of the central committee of the Socialist Unity Party of Germany on the occasion of the 150th anniversary of the birth of Karl Marx, from 2 to 4 May 1968 in Berlin.

The significance and vital force of the teachings of Karl Marx for our era. Speech [for the] International scientific session of the central committee of the Socialist Unity Party of Germany on the occasion of the 150th anniversary of the birth of Karl Marx, from 2 to 4 May 1968 in Berlin.