TY - BOOK AU - Lo,C.P. AU - Yeung, Albert K. W., TI - Concepts and techniques of geographic information systems SN - 013149502X(hbk) : U1 - 910.285 PY - 2007/// CY - Upper Saddle River, NJ PB - Pearson/Prentice Hall KW - Geographic information systems N1 - Includes bibl. references and index ER -