@book{000a080fb2894cf0a7c8df93931fdba3,
title = "Principles of geographic information systems : an introductory textbook : translated into Mongolian",
author = "\{de By\}, R.A. and P.Y. Georgiadou and R.A. Knippers and M.J. Kraak and Y. Sun and M.J.C. Weir and \{van Westen\}, C.J.",
editor = "\{de By\}, R.A.",
year = "2011",
language = "English",
isbn = "978-99962-1-270-3",
volume = "2004",
series = "ITC Educational Textbook Series",
publisher = "International Institute for Geo-Information Science and Earth Observation",
number = "1",
address = "Netherlands",
edition = "3",
}