Module: ONIX::IdentifiersMethods::Isbn

Included in:
ONIX21::Product, Product
Defined in:
lib/onix/identifier.rb

Instance Method Summary collapse

Instance Method Details

#isbn13 ⇒ String

ISBN-13 string identifier from identifiers

Returns:

  • (String) 


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# File 'lib/onix/identifier.rb', line 98

def isbn13
  if isbn13_identifier
    isbn13_identifier.value
  else
    nil
  end
end