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Laurencia obtusa NYPL b. en Laurencia obtusa nypl org Scan by NYPL Laurencia obtusa Algae Photography Halstead Place Sevenoaks Spencer Collection ebccfcdabc Photographs of British algae cyanotype impressions ddabeadeeaa repo nypl org PDoldauto DEFAULTSORT NYPLb Laurencia obtusa Images uploaded by NYPLb NYPL Spencer Collection