Historical records of the Survey of India
"Phillimore, R. H."
Historical records of the Survey of India - Dehradun "Office of the Geodetic Branch,Survey of India" 1958 - v.p
India-Geodesy-Records and correspondence
GL 526.9
Historical records of the Survey of India - Dehradun "Office of the Geodetic Branch,Survey of India" 1958 - v.p
India-Geodesy-Records and correspondence
GL 526.9