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This book contains everything you need to know about variable stars -- stars whose brightness varies noticeably over time. The study of variable stars has been
Using illustrated examples of monochrome printing, Gradient Light expands the horizons of what can be achieved with today's variable contrast papers. Master pri
Observing variable stars is one of the major contributions amateur astronomers make to science. There are 36,000 variable stars listed in the General Catalogue
Dennis Zill's mathematics texts are renowned for their student-friendly presentation and robust examples and problem sets. The Fourth Edition of Single Variable
