TY  - BOOK
AU  - Bernhardsen,Tor
TI  - Geographic information systems: an introduction 
SN  - 0471321923 (acidfree paper)
AV  - G70.212 .B473 1999
U1  - 910/.285 BER 1999 21
PY  - 1999///
CY  - New York
PB  - Wiley
KW  - Geographic information systems
N1  - Includes bibliographical references (p. 362-364) and index
UR  - http://www.loc.gov/catdir/toc/onix03/98038195.html
UR  - http://www.loc.gov/catdir/enhancements/fy0607/98038195-b.html
UR  - http://www.loc.gov/catdir/enhancements/fy0607/98038195-d.html
ER  -