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Polysiphonia fibrata NYPL b. en Polysiphonia fibrata nypl org Scan by NYPL Polysiphonia fibrata Algae Photography Halstead Place Sevenoaks Spencer Collection abfcfddabc Photographs of British algae cyanotype impressions ddadadeeaa repo nypl org PDoldauto DEFAULTSORT NYPLb Polysiphonia fibrata Images uploaded by NYPLb NYPL