000 00229 a2200085 4500
100 _aAgor,R
245 _aA Textbook of surveying and levelling
_cR.Agor
260 _aDelhi :
_bKhanna Publisher,
_c1996.
300 _axxii,968p. :
_bill. ;
_c20 cm.
650 _asurvey
999 _c679
_d679