Pickering, Edward Charles.
Recent observations of variable stars. Presented March 12, 1884. (Cut from American academy of arts and sciences. Proceedings. Boston, 1884. Vol. 19, ppe 296= 309.) No. 1 in **£.220a.66
Same. (In American academy of arts and sciences. Proceedings. Boston, 1884. Vole 19, ppe 296- 309.) *3370 06019
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