0. DOCID:11099 1927 "Research Notes from the Harvard Observatory" 0.0303953671112453
1. DOCID:10721 1925 "On the Daylight Visibility of Stars from a Mine Shaft" 0.0204514570806811
2. DOCID:10508 1925 "Abstracts of Papers Presented at the Madison Meeting, November 9, 10 and 11" 0.01669273428135
3. DOCID:9294 1920 "Preliminary Results of Analysis of Light Deflections Observed during Solar Eclipse of May 29, 1919" 0.016291020794431
4. DOCID:11238 1927 "The Lunar Eclipses of 1927" 0.015630947022239
5. DOCID:10441 1924 "The National Academy of Sciences" 0.0148375087225654
6. DOCID:8674 1917 "A Topographic Map of Wisconsin" 0.0146898654892761
7. DOCID:9266 1920 "Two New Base Maps of the United States" 0.0131733690593767
8. DOCID:10626 1925 "The Eclipse of January 24, 1925" 0.0129013329044858
9. DOCID:8433 1916 "Proceedings of the National Academy of Sciences" 0.0128316097984394
10. DOCID:9714 1921 "The American Philosophical Society" 0.0127619263476386
11. DOCID:10905 1926 "Opening of the Astronomic Hall of the American Museum" 0.0126911416874788
12. DOCID:8075 1915 "The Proceedings of the National Academy of Sciences (Numbers 1-4)" 0.0125399734381644
13. DOCID:8121 1915 "A Remarkable Eclipse" 0.01252701380212
14. DOCID:11120 1927 "On the Origin of Sun-Spot Vortices" 0.0122825115676655