https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/abs/monograph-of-the-calcareous-sponges-porifera-calcarea-of-greenland/16611358D1A27897813D8322F3AE628F
A monograph of the calcareous sponges (Porifera, Calcarea) of Greenland | Journal of the Marine...
A monograph of the calcareous sponges (Porifera, Calcarea) of Greenland - Volume 95 Issue 7
of thecalcareous spongesmonograph