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3 Subjects: “...Astronomical instruments...”

4 Subjects: “...Astronomical instruments...”

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6 Subjects: “...Astronomical geography / Popular works...”

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19 Table of Contents: “... -- Astronomers in the Antipodes -- Americans in Batakland -- Interwar Researches -- Postwar American Scholar...”

20 Table of Contents: “... in medical domain classification -- The Classification of IRAS Point Sources -- Astronomical classification...”