Wersja polska Return to the main page CZESŁAW POROWSKI, Dr. Address: Space Research Centre Polish Academy of Sciences Bartycka 18a 00-716 Warszawa Poland Contact: Phone: +48 22 496 6311 Fax: +48 22 840 31 31 E-mail: cporowski AT cbk.waw.pl Last modification: July 13, 2021