TY - BOOK AU - Clarke,Keith C. TI - Getting started with geographic information systems T2 - Prentice Hall series in geographic information science SN - 9780131494985 AV - G70.212 .C57 2011 U1 - 910.285 22 PY - 2011/// CY - Boston PB - Prentice Hall KW - Geographic information systems N1 - Includes bibliographical references and index ER -