6 description: internally assigned title identifier
9 description: title of the title
13 usage_data_provider_id:
14 description: usage_data_provider the title is harvested by
17 description: doi number of the title
22 description: print_issn number of the title
27 description: online_issn number of the title
32 description: title_uri number of the title
37 description: provider_name of the title
42 description: metric_type of the title data
48 description: usage mus
50 $ref: erm_usage_mus.yaml
53 description: usage yus
55 $ref: erm_usage_yus.yaml
57 additionalProperties: false
60 - usage_data_provider_id