What Does Topographic Land Survey Bangladesh Mean?
বাংলাদেশ জরিপ অধিদপ্তর মেনু নির্বাচন করুনDutch mathematician Willebrord Snellius (a.k.a. Snel van Royen) introduced the fashionable systematic utilization of triangulation. In 1615 he surveyed the gap from Alkmaar to Breda, about 72 miles (116 km). He underestimated this lengt