TY - BOOK AU - Lo,C.P. AU - Yeung,Albert K.W. TI - Concepts and techniques in geographic information systems SN - 0130804274 AV - G70.212 .L627 2002 U1 - 910.285 YEU 21 PY - 2002/// CY - Upper Saddle River, NJ PB - Prentice Hall KW - Geographic information systems N1 - Includes bibliographical references ER -