Cyclic fluctuations in geomagnetic secular change, 1915-1959
By: por Lélio I. Gama.
Series: Observatório Nacional. Publicações do Serviço Magnético, no. 7; Publicações do Serviço Magnético ;; no. 7.
Publisher: Observatório Nacional
Published: 1960
Place of publication: Rio de Janeiro
Language: eng
Number of pages: 52
Subjects: Geomagnetism -- Secular variations -- Brazil -- Vassouras.
Notes: Cover title.
"Trabalho patrocinado pelo Conselho Nacional de Pesquisas."
Observations made at the Vassouras Magnetic Observatory.