The theme is developed that '---when man dares to step, in but one generation, from land to space, he is met on every side by a formidable array of basic biological 'Evolutionary Barriers''.
From Land to Space in a Generation: An Evolutionary Challenge. Harry G. Armstrong Lecture (3RD)
1968
15 pages
Report
Keine Angabe
Englisch
Space History - NEIL A ARMSTRONG
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