000 003210000a22001450004500
245 _aEDM traverses
100 _aBird, R.G.
260 _aHarlow
_bLongman Scientific & Technical
_c1989
300 _axii, 148p.
020 _a0582023793
080 _a528
_bB5
650 _aSURVEYING
041 _aEN
942 _cBK
999 _c61148
_d61148