00391nam a2200133Ia 4500003000900000008004100009040001600050080001700066100002700083245006400110260005000174300001000224650002300234IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.945bDUN  aDunn, Richard Brandner 0aPhotometry of the solar chromospherecRichard Brandner Dunn  aMassachusettsbHarvard University Pressc1960  a200p.  aSolar chromosphere