TY - JOUR AU - Usery, E. Lynn PY - 1992/06/01 Y2 - 2024/03/28 TI - Geographical Information Systems: Principles and Applications JF - Cartographic Perspectives JA - CP VL - 0 IS - 13 SE - Reviews DO - 10.14714/CP13.1002 UR - https://cartographicperspectives.org/index.php/journal/article/view/cp13-usery SP - 21-22 AB - ER -