000 00640cab a2200253 4500
001 X1156
008 090401t1993 xxu||||| |||| 00| 0 eng d
035 _a(Sirsi) u15052
041 _aeng
100 _aCross, P.A.
245 4 _aThe impact of GPS on surveying and mapping
260 _c1993
350 _a0
490 _aSouth African Journal of Surveying and Mapping
_v22(2) August 1993, 73-80(8)
650 _aGEODESY
650 _aGLOBAL POSITIONING SYSTEMS
650 _aGPS
650 _aMAPPING
650 _aSURVEYING
650 _aTHREE DIMENSIONAL
690 _aLAND SURVEYING
942 _n0
948 _c04/03/1997
999 _c9830
_d9830