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- [5] PARALLAX AND ORBITAL MOTION OF ALGOL - FROM PHOTOGRAPHS TAKEN WITH THE 24-INCH SPROUL REFRACTOR [J]. ASTRONOMICAL JOURNAL, 1951, 55 (08): : 251 - 258
- [6] THE PARALLAX OF ADS-61 - FROM PHOTOGRAPHS TAKEN WITH THE 24-INCH SPROUL REFRACTOR [J]. ASTRONOMICAL JOURNAL, 1951, 56 (02): : 55 - 56
- [7] REVISED PARALLAXES FOR 10 NEARBY STARS FROM PLATES TAKEN WITH SPROUL 24-INCH REFRACTOR [J]. ASTRONOMICAL JOURNAL, 1973, 78 (05): : 426 - 428
- [8] PARALLAX AND MASS RATIO OF ADS 61 FROM PHOTOGRAPHS TAKEN WITH 24-INCH SPROUL REFRACTOR [J]. ASTRONOMICAL JOURNAL, 1963, 68 (01): : 45 - &
- [10] PARALLAXES AND PROPER MOTIONS OF 6 NEARBY STARS - FROM PHOTOGRAPHS TAKEN WITH THE 24-INCH SPROUL REFRACTOR [J]. ASTRONOMICAL JOURNAL, 1953, 58 (02): : 54 - 60