40 nights to knowing the skyde Fred Schaaf · Publicada por primera vez en 1998MateriasObservers' manualsAstronomy projectsAstronomyAstronomy, popular worksSkyConstellationsEdiciones (1)40 nights to knowing the sky (1998)Henry Holt · inglésMás obras de Fred SchaafThe brightest starsSeeing the skyThe 50 Best Sights in Astronomy and How to See Them2007