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Gelidium corneum vars NYPL b. en Gelidium corneum vars nypl org Scan by NYPL Gelidium corneum vars Algae Photography Halstead Place Sevenoaks Spencer Collection aaccfcddabc Photographs of British algae cyanotype impressions ddaadeeaa repo nypl org PDoldauto DEFAULTSORT NYPLb Gelidium corneum Images uploaded by NYPLb NYPL