Ready References
Essential Technologies for Making Accurate PC-Based Measurements
Introduction to Partial Differential Equations
Introduction to Object-Oriented Software
AAVSO Observing Programs
Notes on the Construction and Design of Instruments and Apparatus
Introduction to Fossils
Variable Stars Explained
Ready References Essential Technologies for Making Accurate PC-Based Measurements 
Introduction to Partial Differential Equations Introduction to Object-Oriented Software 
Notes on the Construction and Design of Instruments and Apparatus 