Ready References
A Guide to Backyard Astronomy
Time and the Amateur Astronomer
Latitude is Everything
Activity: Estimating Magnitudes
Activity: Observing Delta Cephei
Technique of High Vacuum
Glass Blowing for the Laboratory
Ready References A Guide to Backyard Astronomy 
Time and the Amateur Astronomer Latitude is Everything 
Activity: Estimating Magnitudes Activity: Observing Delta Cephei 
Technique of High Vacuum Glass Blowing for the Laboratory