Spectroscopy for Amateur Astronomers: Recording, Processing, Analysis and Interpretation
by Marc F. M. Trypsteen,Richard Walker
ISBN 13: 9781107166189
Format: Hardcover (162 pages) Publisher: Cambridge University Press Published: 20 Jul 2017
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The Human Body: A Pop-Up Guide to Anatomy
by Richard Walker,Rachel Caldwell
ISBN 13: 9781787410589
Format: Hardcover (16 pages) Publisher: Templar Publishing Published: 29 Nov 2018