11 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-03-20 14:52:24
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12 | Add to Reading ListSource URL: kestreltrust.orgLanguage: English - Date: 2013-12-20 13:49:07
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13 | Add to Reading ListSource URL: www.kestreltrust.orgLanguage: English - Date: 2014-04-03 11:26:35
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14 | Add to Reading ListSource URL: www.holyoke.orgLanguage: English - Date: 2014-01-17 13:52:24
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15 | Add to Reading ListSource URL: www.thetrustees.orgLanguage: English - Date: 2013-06-07 16:47:42
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16 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 08:59:06
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