000 00625cab a2200253 4500
001 X893
008 090401t1993 xxu||||| |||| 00| 0 eng d
035 _a(Sirsi) u97907
041 _aeng
100 _aChristie, R.
245 _aGlobal positioning systems
260 _c1993
350 _a0
490 _aBURISA
_v(109) July 1993, 13-15(3)
650 _aCO ORDINATES
650 _aETRF89
650 _aGPS
650 _aLAND SURVEYING
650 _aNATIONAL GRID
690 _aMANAGEMENT-BUSINESS MANAGEMENT-INFORMATION MANAGEMENT
690 _aMAPPING AND MEASUREMENT
942 _n0
948 _c04/03/1997
999 _c59737
_d59737