TY - BOOK AU - Yeung, Albert K. W. TI - Concepts and Techniques of Geographic Information Systems SN - 9788120339149 U1 - 910.285 YEU 2nd ed. PY - 2007/// CY - New Delhi PB - :PHI KW - Geographic information systems KW - , Geoinformationssystem KW - , Yeung, Albert K. W KW - , Lo, C. P KW - and Concepts and Techniques of Geographic Information Systems ER -