Kayastha DM. Database generalization and production of derived maps at 1:100000 and 1:250000 scales using NTDB in NGII context. J. Geoinformatics, Nep. [Internet]. 2002 May 27 [cited 2024 Dec. 4];1(1):42-7. Available from: https://nepjol.info./index.php/NJG/article/view/51473