সকল লিংক ভূমিসেবা জাতীয় ভূমি-তথ্য ও সেবা কাঠামোThe Survey of Bangladesh (SB) Launched in 1973 may be the Formal surveying and mapping organization. It carries out geodetic and topographic surveys, and compiles and publishes topographic and lesser scale maps.Evidence of so
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