ISBN 1377160246 books & textbook
Electro-telegraphic Longitude Operations Executed During The Years 1894-95-96: The Indo-european Arcs From Karachi To Greenwich
Survey of India Trigonometrical Branch
Sagwan Press /2018-02-08 Paperback / 412 Pages
isbn-10: 1377160246 / isbn-13: 9781377160245
