"1" .
.
"The surface called \"surface\" means the lower boundary of the atmosphere. \"Content\" indicates a quantity per unit area. \"Radioactivity\" means the number of radioactive decays of a material per second. \"Pr\" means the element \"praseodymium\" and \"147Pr\" is the isotope \"praseodymium-147\" with a half-life of 8.33e-03 days."@en .
"SDN:P07::68E18PKZ" .
"" .
.
.
"false" .
"accepted"@en .
.
"2018-02-12 16:53:18.0" .
.
"surface_radioactivity_content_of_147Pr"@en .
"SDN:P07::68E18PKZ" .
"SDN:P07::68E18PKZ" .
"1" .
"2018-02-12 16:53:18.0" .
.