00620nam a22001457a 4500008004100000040005500041080003600096245018100132260005500313300001700368490003300385500001200418650001600430700002800446230712b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a006.02:543.05/.06](082.2)bL6.2  aAccuracy in trace analysis: bSampling, sample handling, analysisc/ Proceedings of the 7th materials research symposium held at National Bureau of Standards 7-11 October, 1974  aWashington: bNational Bureau of Standards, c1976  axiii, 1304p.  aNBS special publications 422  aVol. II  aProceedings  aLaFleur, Philip D (Ed.)