Supplementary catalogue I of original and future comet orbits
Zdeněk Sekanina (1968)
Acta Universitatis Carolinae. Mathematica et Physica
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Zdeněk Sekanina (1968)
Acta Universitatis Carolinae. Mathematica et Physica
Similarity:
Zdeněk Sekanina (1966)
Acta Universitatis Carolinae. Mathematica et Physica
Similarity:
Zdeněk Sekanina (1966)
Acta Universitatis Carolinae. Mathematica et Physica
Similarity: