module ONIX::IsbnMethods
Public Instance Methods
isbn13()
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ISBN-13 string identifier from identifiers @return [String]
# File lib/onix/identifier.rb, line 95 def isbn13 if isbn13_identifier isbn13_identifier.value else nil end end
Private Instance Methods
isbn13_identifier()
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# File lib/onix/identifier.rb, line 104 def isbn13_identifier self.identifiers.select{|id| id.type.human=="Isbn13"}.first end