lib/mida_vocabulary/vocabularies/schemaorg/periodical.rb in mida_vocabulary-0.2 vs lib/mida_vocabulary/vocabularies/schemaorg/periodical.rb in mida_vocabulary-0.2.2

@@ -9,9 +9,12 @@
     # A publication in any medium issued in successive parts bearing numerical or chronological designations and intended, such as a magazine, scholarly journal, or newspaper to continue indefinitely.
     class Periodical < Mida::Vocabulary
       itemtype %r{http://schema.org/Periodical}i
       include_vocabulary Mida::SchemaOrg::CreativeWork
       include_vocabulary Mida::SchemaOrg::Thing
+
+      # The International Standard Serial Number (ISSN) that identifies this periodical. You can repeat this property to (for example) identify different formats of this periodical.
+      has_many 'issn'
     end
 
   end
 end