If anyone was buying these they would still need both volumes as the Souythern Hemisphere one only covers up to 6 deg N, so huge chunks of our sky (think Leo, Pegasus, Gemini!) that are not covered by the Southern volume. That's why I am glad that they have gone to an all sky edition.
When my Southern volume is too tatty for further use (it's not far off!) I will update with the new edition. Hopefully Bintel have it by then!
Malcolm
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