Lazar_El_Lissitzky_-_Kestnermappe_Proun,_Rob._Levnis_and_Chapman_GmbH_Hannover_-7_-_Google_Art_Project Published September 16, 2013 at 2818 × 3855 in PROUN ← Previous Next → El Lissitzky, PROUN Hannover 7 (1920) El Lissitzky, PROUN Hannover 7 (1920)