Name | Last modified | Size | Description | |
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1896-spectrum-cathod..> | 2010-09-12 14:27 | 15K | ||
1901-sunsports and t..> | 2010-09-12 14:27 | 20K | ||
NYT Birkeland.pdf | 2010-09-12 14:27 | 189K | ||
aurora.pdf | 2010-12-01 02:58 | 61M | ||
birkelandquietsun.jpg | 2009-03-20 15:48 | 84K | ||