Berlin: Aufbau-Verlag, 1952-1956. Hardcover. Respectively 312, 103, 541, 253, 307p., hardcovers in matched cloth bindings (dark blue cloth lettered gilt), ex library from a small private marxist collection: expect uniform faint sticker shadows at the tail, ownership rubberstamp on front pastedowns, and occasional neat underlining and marginalia in colored inks. Quite sound and otherwise clean, good copies. The five together as a small lot.