World Data Center A for Solar-Terrestrial Physics: Report UAG (series). 48. Synoptic observations of solar corona during Carrington rotations 1580-96 (11 Oct. 1971-15 Jan. 1973) [with list of references]; by R. A. Howard, M. J. Koomen, D. J. Michels, R. Tousey, C. R. Detwiler, D. E. Roberts, R. R. Seal, J. D. Whitney, R. T. and S. F. Hansen, C. J. Garcia, and E. Yasukawa.

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