Published in Nautilus, in 1964, in volume 77, pages 109-110

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1964, in volume 77, pages 128-131

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1964, in volume 77, pages 132-134

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1964, in volume 77, pages 134-139

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1964, in volume 78, pages 1-3

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1964, in volume 78, pages 60-62

Created: 2012-03-12, modified: 2012-03-12