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Venus and Mercury, and How to Observe Them
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Venus and Mercury, and How to Observe Them

Venus and Mercury have always been regarded as difficult targets for amateurs, but advances in commercially-made instruments have brought them within range of only moderately experienced observers.

Forfatter
Peter Grego
Opplag
2008 ed.
ISBN
9780387742854
Språk
Engelsk
Vekt
310 gram
Utgivelsesdato
1.2.2008
Antall sider
266