Ready References
Basics of Motion Control
Beating the Seeing
Making Variable Star Observations
The Interior of the Earth
Vacuum Thermopiles and the Measurement of Radiant Energy
Technique of High Vacuum
A Naturalist's Notebook
Ready References 
Basics of Motion Control Beating the Seeing 
Making Variable Star Observations The Interior of the Earth 
Vacuum Thermopiles and the Measurement of Radiant Energy Technique of High Vacuum A Naturalist's Notebook