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observing aids

Title Posted Bysort icon Updated/commented date Type
Visual Observing Manual - Spanish BSJ 1 year 4 weeks ago Page
Visual Observing Manual in Persian BSJ 2 years 49 weeks ago Page
Frequency of Observations for Different Variable Star Types BSJ 4 years 34 weeks ago Page
CCD Views June 2001 Aaron Price 3 years 30 weeks ago Page
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