Published in Nautilus, in 1974, in volume 88, pages 10-13

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 31-32

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 33-37

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 69-79

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 80-85

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 86-89

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 91-93

Created: 2016-08-10, modified: 2016-08-10

Published in Nautilus, in 1974, in volume 88, pages 94-100

Created: 2016-08-10, modified: 2016-08-10