IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_ind
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level0
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level1
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level1A
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level1B
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level1C
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level2
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level2P
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level3
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level3C
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level3S
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level3U
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_level4
IRI: http://vocab.ceda.ac.uk/collection/cci/procLev/proc_unspecified