
Planisphere - Wikipedia,

NGC 3987, 3989, 3993, 3997, 4000, 4005, 4011, 4015, 4018,

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NGC 3987, 3989, 3993, 3997, 4000, 4005, 4011, 4015, 4018,

NGC 3987, 3989, 3993, 3997, 4000, 4005, 4011, 4015, 4018