Cortie, A. L. (1907). The Stonyhurst discs for measuring the positions of Sun-spots. Assoc. by Eyre and Spottiswoode.
Cita Chicago Style (17a ed.)Cortie, Aloysius Laurence. The Stonyhurst Discs for Measuring the Positions of Sun-spots. [London: Assoc. by Eyre and Spottiswoode, 1907.
Cita MLA (9a ed.)Cortie, Aloysius Laurence. The Stonyhurst Discs for Measuring the Positions of Sun-spots. Assoc. by Eyre and Spottiswoode, 1907.
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