Speakers: Richard Hahn

By Peter Sturrock, Henry Bauer, David Pratt, William Bengston, David Krinsley, Ian Stevenson, Jiirgen Keil, Robert Jahn, Brenda Dunne, York Dobyns, Roger Nelson, John Bradish, David Bishai, Suitbert Ertel, Kenneth Irving, Halton Arp, Jesse Xiong, Richard Hahn, Stephan Schwartz, Robert Nordberg, Alexander Zmich, Larissa Vilenskaya