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Visual observations Instr : 102mm / f15 Refractor ICQ Format Comet observations of : 21P/ Giacobini - Zinner IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxxx 21 1985 07 20. missing data 21 1985 07 21. missing data 21 1985 07 23. missing data 21 1985 07 29. missing data 21 1985 08 01. missing data 21 1985 08 03. missing data 21 1985 08 08. missing data 21 1985 08 10. missing data 21 1985 08 12. missing data 21 1985 08 14. missing data 21 1985 08 15. missing data 21 1985 08 21. missing data 21 1985 08 26. missing data 21 1985 09 01. missing data 21 1985 09 24. missing data