Flier for United Nations Environment Programme's World Environment Day at Missouri Botanical Garden, June 5, 1988, A2132-00007. Missouri Historical Society Library and Research Center.

Flier for United Nations Environment Programme's World Environment Day at Missouri Botanical Garden, June 5, 1988, A2132-00007. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/10564 Accessed November 25, 2024.