| Resource Type | : | Journal |
| Author | : | Colonel Walker J. T. |
| Original Era | : | 1879 |
| Subject | : | The Principal Triangulation: The Base-Line Figures; The Karachi Longitudinal; N.W. Himalaya; and Great Indus Series of the North West Quadrilateral. |
| Publisher | : | The Great Trigonometrical Survey of India |
| Place of Publication | : | Dehra Doon |
| Language | : | English |
| Pages/Folios | : | 894p., ill |
| Identifier | : | BV_00130289 |
| Digitization Sponsor | : | Government of Maharashtra |
| File Size | : | 46.8 M.B. |