Wallace, L. <br/><br/>
An atlas of sunspot umbral spectra in the visible from 15000 to 25500cm-1 (3920 to 6664 A) 
L. Wallace, K. Hinkle and W. Livingston                                                   
 - Tucson  National Solar Observatory  2000 
 - NSO technical report; no. 1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atlas<br/>Sunspots
<br/><br/><label>Universal Decimal Class. No.: </label>084.4:523.74  / WAL