. . . . . . . . . . . "accepted"@en . . "Part_SD_Pb210_0.4/0.45-51" . . . "SDN:P01::SDPB210P" . . . . "Activity standard deviation of lead-210 {210Pb CAS 14255-04-0} per unit mass of the water body [particulate 0.4/0.45-51um phase] by filtration and alpha spectroscopy"@en . . "The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en . . . . . . . . . . .