CED. (1999). Geographic Information System and Remote sensing, introduction, spatial data concepts.
Chicago Edition CitationCED. Geographic Information System and Remote Sensing, Introduction, Spatial Data Concepts. Trivandrum, Centre for Environment and development (CED), 1999.
ציטוט MLACED. Geographic Information System and Remote Sensing, Introduction, Spatial Data Concepts. 1999.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.