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63. High-Resolution X-ray Observations of the Orion Nebula. Ku WH; Righini-Cohen G; Simon M Science; 1982 Jan; 215(4528):61-4. PubMed ID: 17790470 [TBL] [Abstract][Full Text] [Related]
64. Energy spectra of a number of celestial x-ray sources in the energy range from 2 to 60 kiloelectron volts. McCracken KG Science; 1966 Nov; 154(3752):1000-2. PubMed ID: 17752800 [TBL] [Abstract][Full Text] [Related]
65. X-ray spectra from three cosmic sources. Grader RJ; Hill RW; Seward FD; Toor A Science; 1966 Jun; 152(3728):1499-504. PubMed ID: 17788028 [TBL] [Abstract][Full Text] [Related]
66. X-rays from Sources 3C 273 and M 87. Friedman H; Byram ET Science; 1967 Oct; 158(3798):257-9. PubMed ID: 17839505 [TBL] [Abstract][Full Text] [Related]