00581cam a2200217   4500001001300000003000400013005001700017008004100034010002300075025002000098043001200118050001900130082001900149110004100168245001500209260002200224300004200246500001700288610004100305999001700346sa 68019129 DLC20260227112717.0711122s1968    ii abh        00000 eng    asa 68019129 //r862  aPL480:I-E-10897  aa-ii---0 aQC51.I42bN376  a530/.07/20545620aNational Physical Laboratory (India)10aNPL, 1968.0 aNew Delhic[1968]  a56 p.billus., facsims., map.c27 cm.  aCover title.20aNational Physical Laboratory (India)  c88834d88834