Troisième assemblée générale
Subtitle: Prague, 1927.
Publisher: Printed at the University Press
Published: 1928
Place of publication: Cambridge [Eng.]
Language: eng
Subjects: Photometry.; Dust.
Notes: Cover title.
At head of title: Union géodésique et géophysique internationale Section de météorologie.
Table of contents: title: Report on photometers for a survey of the reflectivity of the earth's surface, by I.F. Richardson.; title: Atmospheric dust: Observations with the Owens dust counter.  I. United States, Washington, January 1925 to July 1927. II. Australia, Melbourne, September 1924 to June 1927.  III. Finland (Aitken dust-counter)  Report by G. Melander.