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  1. NLM Digital Collections - A. Baird Hastings : an oral history 
    Publication: Produced: Dec., 1967, Feb. and May, 1968
    resource.nlm.nih.gov/2935113R
    ... and you can detect 0.1 of a millimole per liter change in calcium ion. The magnesium ... solution whose concentration of becarbonate was about 100 millimoles per liter. I should have also said at ...