NAME

       Catmandu::Fix::isbn10 - normalize the isbn value of a key in 10-digit form

SYNOPSIS

         # Normalize the ISBN value of isbn_field.
         # e.g. isbn_field => '1565922573'

         isbn10(isbn_field) # isbn_field => '1-56592-257-3'

SEE ALSO

       Catmandu::Fix, Catmandu::Fix::isbn13