00975nas 2200349 c 450 99620017180331620240405011519.0(CKB)1000000000527094(DE-599)ZDB2146110-7(OCoLC)405777788(DE-101)025998633(EXLCZ)99100000000052709420040518b19571984 |y |engur|||||||||||txtrdacontentcrdamediacrrdacarrierSmithsonian Astrophysical Observatory special reportSmithsonian InstitutionCambridge, Mass.1957-1984Online-RessourceSpecial reportSAO special reportZeitschriftgnd-content5200355DE-1014022JOURNAL996200171803316Smithsonian Astrophysical Observatory special report1942001UNISA