Thaddaeus Ropac Salzburg presents an unprecedented dialogue between VALIE EXPORT and Ketty La Rocca, two of the most visionary feminist conceptual artists to emerge in Europe during the 1960s. BODY SIGN , shown at Thaddaeus Ropac Milan earlier this year, was the last exhibition conceived in close collaboration with VALIE EXPORT during her lifetime. Both artists used their bodies as tools to challenge language’s patriarchal function and expose the dichotomy between its role in public and…