000 00420 a2200169 4500
082 _a526.9
_bAGO
090 _c32152
_d56841
100 _aAgor, R.
245 _aA text book of surveying & levelling
260 _aDelhi
_bKhanna
_c2002
_g2002
300 _axxii, 1004p.
_c21cm.
650 _aMap projections
650 _aLinear measurement
650 _aChain surveying
650 _aReduction diagram
942 _cSR
999 _c58655
_d58655