Once again, I don't have the figures with me. I haven't monitored the concentrations. So I'm not sure. Perhaps we should look at the data that Waterloo University has published in this field.
Associate Professor, Environmental Engineering Program, University of Alberta, As an Individual
Once again, I don't have the figures with me. I haven't monitored the concentrations. So I'm not sure. Perhaps we should look at the data that Waterloo University has published in this field.
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