1
2
出版事項: 1946
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 278
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4
5
出版事項: 1944
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 263
6
出版事項: 1935
Superior document: Annals of the Astronomical Observatory of Harvard College 89,6
7
8
出版事項: 1946
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 281
9
出版事項: 1932
Superior document: Annals of the Astronomical Observatory of Harvard College 89,2
10
出版事項: 1952
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 41
11
12
出版事項: 1926
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 34
13
出版事項: 1936
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 123
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15
出版事項: 1944
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 267
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17
18
19
20