Published in Nautilus, in 1979, in volume 93, pages 1-10

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

Published in Nautilus, in 1979, in volume 93, pages 10-14

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

Published in Nautilus, in 1979, in volume 93, pages 63-69

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

Published in Nautilus, in 1979, in volume 93, pages 70-73

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

Published in Nautilus, in 1979, in volume 93, pages 103-105

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

Published in Nautilus, in 1979, in volume 93, pages 133-135

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

Published in Nautilus, in 1979, in volume 93, pages 142

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

Published in Nautilus, in 1979, in volume 93, pages 153-159

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

Published in Nautilus, in 1979, in volume 93, pages 159-162

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