Telegraphic determinations of the difference of longitude between Karachi, Avanashi, Roorkee, Pondicherry, Colombo, Jaffina, Muddapur and Singapore, and the government observatory, Madras
By: by Norman R. Pogson.
Publisher: Printed at the Lawrence Asylum Press, by W.H. Moore
Published: 1884
Place of publication: Madras
Language: eng