共 50 条
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- [22] OBSERVATIONS OF PLANETARY-NEBULAE AT 1.65 TO 3.4 MICRONS ASTROPHYSICAL JOURNAL, 1972, 175 (03): : 699 - &
- [26] SPECTROSCOPIC OBSERVATIONS OF GENUINE AND MISCLASSIFIED PLANETARY-NEBULAE ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1987, 67 (03): : 541 - 544
- [28] ARECIBO INTERFEROMETER OBSERVATIONS OF COMPACT PLANETARY-NEBULAE ASTRONOMICAL JOURNAL, 1984, 89 (04): : 501 - 505
- [30] SPECTROSCOPIC OBSERVATIONS OF FAINT AND MISCLASSIFIED PLANETARY-NEBULAE ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1987, 68 (01): : 51 - 62