Alexandria Digital Research Library

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You searched for: Genre slides (photographs) Remove constraint Genre: slides (photographs) Topic Red sea urchin Remove constraint Topic: Red sea urchin Topic Sea urchins Remove constraint Topic: Sea urchins Topic Strongylocentrotus franciscanus Remove constraint Topic: Strongylocentrotus franciscanus Topic Strongylocentrotus purpuratus Remove constraint Topic: Strongylocentrotus purpuratus Place Imperial Beach (Calif.) Remove constraint Place: Imperial Beach (Calif.)

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