1
2
出版: 1946
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 286
3
4
5
6
7
8
出版: 1958
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 132
9
出版: 1956
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 91
10
出版: 1944
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 265
11
出版: 1961
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 173
12
13
出版: 1945
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 9
14
出版: 1944
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 268
15
出版: 1953
Superior document: Annals of the astronomical observatory of Harvard College 113,2
16
出版: 1954
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 60/61
17
18
出版: 1937
Superior document: Annals of the Astronomical Observatory of Harvard College 89,9
19
出版: 1947
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 293
20
出版: 1939
Superior document: Annals of the astronomical observatory of Harvard College 108,1