Source:
Scientific American [Sci Am] 1974 Oct; Vol. 231 (4), pp. 100-6.Publisher: Scientific American Country of Publication: United States NLM ID: 0404400 Publication Model: Print Cited Medium:
Source:
Scientific American [Sci Am] 1989 Aug; Vol. 261 (2), pp. 74-80.Publisher: Scientific American Country of Publication: United States NLM ID: 0404400 Publication Model: Print Cited Medium: