Published in Contributions in Science, in 1981, in volume 331, pages 1-19
Published in Contributions in Science, in 1981, in volume 332, pages 1-74
Published in Contributions in Science, in 1981, in volume 333, pages 1-27
Published in Contributions in Science, in 1981, in volume 334, pages 1-16
Published in Contributions In Science (Los Angeles), in 1981, in volume 335, pages 1-8