All Covers for Letter (Astounding, September 1943): Don Channing Mentions a Millisecond as the Deviation in Postition as Observed from Venus Equilateral. The Ship Didn't —Couldn't—Turn at Right Angles, But a Vector of Considerable Magnitude at Right Angles Was Obtained.

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[Back to the Title page for Letter (Astounding, September 1943): Don Channing Mentions a Millisecond as the Deviation in Postition as Observed from Venus Equilateral. The Ship Didn't —Couldn't—Turn at Right Angles, But a Vector of Considerable Magnitude at Right Angles Was Obtained.]

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