Published in Contributions in Science, in 1969, in volume 155, pages 1-14

Published in Contributions in Science, in 1969, in volume 156, pages 1-10

Published in Contributions in Science, in 1969, in volume 157, pages 1-9

Published in Contributions in Science, in 1969, in volume 158, pages 1-6

Published in Contributions in Science, in 1969, in volume 159, pages 1-25

Published in Contributions in Science, in 1969, in volume 160, pages 1-6

Published in Contributions in Science, in 1969, in volume 161, pages 1-6

Published in Contributions in Science, in 1969, in volume 162, pages 1-48

Published in Contributions in Science, in 1969, in volume 163, pages 1-8

Published in Contributions In Science, in 1969, in volume 164, pages 1-28

Published in Contributions in Science, in 1969, in volume 165, pages 1-16

Published in Contributions in Science, in 1969, in volume 166, pages 1-22

Published in Contributions in Science, in 1969, in volume 167, pages 1-32

Published in Contributions in Science, in 1969, in volume 168, pages 1-30

Published in Contributions in Science, in 1969, in volume 169, pages 1-12

Published in Contributions in Science, in 1969, in volume 170, pages 1-9

Published in Contributions in Science, in 1969, in volume 171, pages 1-5

Published in Contributions in Science, in 1969, in volume 172, pages 1-11

Published in Contributions in Science, in 1969, in volume 173, pages 1-20

Published in Contributions in Science, in 1969, in volume 174, pages 1-30

Published in Contributions in Science, in 1969, in volume 175, pages 1-40