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John S. Lehmann Building. Skylight.
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John S. Lehmann Building. Herbarium stacks.
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John S. Lehmann Building. Exterior in spring with Tower Grove House in background.
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John S. Lehmann Building. Interior.
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Research. Michigan. Hyrum Johnson and Sylvia Morhardt packing ecology wagon to go to Michigan. Mounted with PHO 2007-0078.
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Biophysical Ecology Research. Heat energy research. Mounted with PHO 2007-0089.
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Biophysical Ecology Research group.
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Research in Brazil 1940s. Schery - Cacao Country. Crossing Una River in Southern Bahia to reach trail to cacao plantations. MBG Bull. 34(6):149. Negative available at PHO 2007-0179.
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Research. Barro Colorado Island. Examining the base of a large Ficus (fig tree). MBG V. 57, No. 6, Nov.-Dec. 1969. Mounted with PHO 2007-0123.
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Research. Barro Colorado Island. Inspecting epiphytes for flowers - unusual plant. Though they be sterile are carried back from the field provided they are epiphytes and can survive such a change. In due time, they usually flower here in the laboratory's epiphyte house. Then specimens can be made of the plants. Mounted with PHO 2007-0122.
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