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Keywords from Image Description:
A CRYPTOGRAM COMMUNITY THE DARK MOUND IS COMMUNITY OF ALGAE AND FUNGI BUILT UP VERY SLOWLY. THESE CRYPTOGRAMS... NARA . Scope and content General notes Local identifier DA Environmental Protection Agency NARAAuthor Hiser David Photographer File ACRYPTOGRAMCOMMUNITY THEDARKMOUNDISACOMMUNITYOFALGAEANDFUNGI BUILTUPVERYSLOWLY