Magnetical observations /
Magnetical observations / Observatory at madras ; under the superintendence of w. s. jacob in the years 1851-1855 ; publised by order of the madras government
Made at the honorable east india company's :
- vi, 247 páginas
Observatory at Madras
Geomagnetismo--Observaciones
QC820 / M34
Observatory at Madras
Geomagnetismo--Observaciones
QC820 / M34