1
منشور في: 1956
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 100
2
منشور في: 1955
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 68
3
منشور في: 1956
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 87
4
منشور في: 1946
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 284
5
منشور في: 1939
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 175
6
منشور في: 1945
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 275
7
منشور في: 1939
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 180
8
منشور في: 1944
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 260
9
منشور في: 1936
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 122
10
منشور في: 1952
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 42
11
منشور في: 1957
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 110
12
منشور في: 1952
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 45
13
منشور في: 1954
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 66
14
15
منشور في: 1938
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 144
16
منشور في: 1945
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 273
17
منشور في: 1945
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series I 274
18
منشور في: 1956
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 99
19
منشور في: [2013]
Superior document: Title is part of eBook package: De Gruyter HUP e-dition: Complete eBook Package
Links: احصل على النص الكامل; احصل على النص الكامل; Cover
20
منشور في: 1956
Superior document: Reprints / The Astronomical Observatory of Harvard College : Series II 86