Sunspots and their effects,
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
New York, London, :
Whittlesey house, McGraw-Hill book company, inc.,
[c1937].
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| Subjects: |
| Physical Description: | xv, 201 p. incl. front., illus., diagrs. pl. ; 21 cm. |
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