TY - BOOK T1 - Geographic information : value, pricing, production, and consumption A1 - Longhorn, Roger A. A2 - Blakemore, M. J. LA - English PP - Boca Raton PB - CRC Press YR - 2008 UL - http://discoverylib.upm.edu.my/discovery/Record/554706 OP - 230 CN - G70.212 L854 SN - 0849334144 (alk. paper) KW - Geographic information systems : Economic aspects. ER -