classification_ss:"303.4833 / DDC22ger"
classification_ss:"KNZI (PB)"
classification_ss:"KNZZ (DU)"
classification_ss:"MS 7965"
classification_ss:"SR 850"
language_ss:"d"
type_ss:"m"
1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm