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022 _a0733-9453
082 _a624,05
245 0 1 _aJournal Surveying Engineering\
_cAmerican society of civil engineerings.
260 _aVirginia:
_bAmerican society of civil engineerings,
_c2003AD .
300 _aVol125,No4:
_c28cm.
362 _aVol125,No4(November 1999).
650 _aCivil engineering
_962187
710 _aAmerican society of civil engineerings.
_962188
942 _2ddc
_cSER
999 _c317673
_d317673