00551nam a2200169Ia 4500003000900000008004100009040001600050080002500066100001500091245015500106260003100261300002300292650001200315650001900327700001400346700002100360IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a084.4:523.982.2bWAL  aWallace, L 0aSunspot umbral spectra in the regions 1925 to 2226 and 2392 to 3480 cm-1 (2.87 to 4.18 and 4.48 to 5.35 m)cL. Wallace, K. Hinkle and W. C. Livingston  bNational Solar Observatory  a[various pagings.]  aSunspot  aUmbral spectra  aHinkle, K  aLivingston, W. C