00370nam a2200145Ia 4500008004100000082001600041100002000057245002800077250000600105260003900111300000800150650003400158650001800192653001400210170901s1959    xx            000 0 und d  a526.3bK11S  aKanetkar, T. P. 0aSurveying and Levelling  a8  aPoonabA. V. Griha Prakashanc1959  a595  aAstronomy and allied sciences  aPure Sciences  aSurveying