"Activity of potassium-40 {40K CAS 13966-00-2} per unit wet weight of biota {Perca fluviatilis (ITIS: 168470: WoRMS 151353)}"@en .
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"SDN:P01::APO07137" .
"The rate of radioactive disintegrations due to the specified nuclide per unit weight of the specified organism or part thereof without drying."@en .
.