National Bureau of Standards
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National Bureau of Standards. Accuracy in Trace Analysis: Sampling, Sample Handling Analysis. Volume 1. 7th Proceedings of the Materials Research Symposium. October 7-11, 1974.
National Bureau of Standards, Washington, DC
NBS SP 422; Volume 1,
National Bureau of Standards. Accuracy in Trace Analysis: Sampling, Sample Handling Analysis. Volume 1. 7th Proceedings of the Materials Research Symposium. October 7-11, 1974,
National Bureau of Standards,
Gaithersburg, MD,
645 p.,
1976