00397nam a2200145Ia 4500008004100000082001600041100002300057245004100080250000600121260005000127300000800177650003400185650001800219653001400237170901s1968    xx            000 0 und d  a526.3bK84S  aKnight, Bernard H. 0aSurveying and Levelling for Students  a4  aCalcuttabOxford and IBH Publishing Co.c1968  a175  aAstronomy and allied sciences  aPure Sciences  aSurveying