| 000 | 00609nam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 220414s1981 us ||||| |||| 00| 0 eng d | ||
| 080 | _a | ||
| 100 |
_aHedeman, E. Ruth _9233250 |
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| 245 |
_aEvolutionary charts of solar activity (calcium plages) as functions of heliographic longitude and time, 1964-1979 / _cE. Ruth Hedeman, Helen W. Dodson, Edmond C. Roelof. |
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| 264 |
_aBoulder, Colorado : _bU.S. Department of Commerce, National Oceanic and Atmospheric Administration, Environmental Data and Information Service, World Data Center A for Solar-Terrestrial Physics, NOAA, _c1981. |
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| 500 | _3Report UAG, 81. | ||
| 999 |
_c585798 _d585796 |
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