World weather and solar activity /
by H. Helm Clayton.
APA Citation
Clayton, H. Helm., Smithsonian Institution. Roebling Fund. (1934). World weather and solar activity. City of Washington: The Smithsonian Institution.
MLA Citation
Clayton, Henry Helm, 1861-1946, and Smithsonian Institution. Roebling Fund. World Weather And Solar Activity. City of Washington: The Smithsonian Institution, 1934.
Warning: These citations may not always be complete (especially for serials).