Catalogue of recurrent groups of sun spotsfor the years 1874 to 1906
By: compiled by Annie S.D. Maunder, from the Ledgers of groups of sun spots published in the Greenwich Observations, 1886-1907, under the direction of W.H.M. Christie.
Contributors: Christie, W. H. M.; Royal Greenwich Observatory.
Publisher: Printed for H.M.S.O by Neill &Co
Published: 1909
Place of publication: Edinburgh
Language: eng
Number of pages: 48
Subjects: Sunspots.
Other titles: Appendix to Greenwich observations, 1907.
Notes: At head of title: Appendix to Greenwich observations, 1907.