00518nam a2200133Ia 4500003000400000020001800004082001500022100001300037245010200050260003500152300001100187650002300198653016300221SGT  a9788174092359  a526.9bAGO  aAgor, R.  aTextbook of surveying : for degree, diploma students, practising engineers, surveyors and A.M.I.E  bKhanna PublishersaDelhic2011  a1060p.  acivil engineering   alinear measurements, chain surveying, compass surveying, plane table surveying, contouring, minor instruments, theodolite traversing, thermometric surveying