On a variation in the intensity of the penetrating radiation at the earth's surface observed during the passage of Halley's comet
By: by Arthur Thomson.
Series: University of Toronto studies. Papers from the physical laboratories,; no. 37; University of Toronto studies.; no. 37.
Publisher: The University Library: pub. by the librarian
Published: 1911
Place of publication: [Toronto]
Language: eng
Subjects: Radioactivity.; Halley's comet.
Notes: Cover title.
From the Transactions of the Royal Society of Canada, 3d ser., vol. IV, 1910-11, section III, Mathematical, physical and chemical science.