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bibliographicCitation (http://purl.org/dc/terms/bibliographicCitation)

@return [String]
A text string citating the described specimen. Often found in
taxonomic treatments and frequently based on institution code and
catalog number.

Example: Iraq: Mosul: Jabal Khantur prope Sharanish N. Zakho, in
fissures rupium calc., 1200 m, Rech. 12083 (W!).
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