Bera B. Application of GPS and ERS Techniques for the Mapping of Out-crops Vs Soil Cover and its Thickness, in Some Mountainous Part of the Sikkim Himalayas. ISC [Internet]. 2009 Jan. 1 [cited 2024 Jul. 17];23(1):30-8. Available from: http://mail.informaticsjournals.com/index.php/ISC/article/view/37634