Gallery›Digital Commonwealth — Williams College›David P. Dethier sampling twigs for chemical analysis.
David P. Dethier sampling twigs for chemical analysis.
Digital Commonwealth — Williams College

David P. Dethier sampling twigs for chemical analysis.

Art, Henry Warren · February 1987

CC0 — Public Domain
Digital Commonwealth — Williams College

David P. Dethier sampling twigs for chemical analysis. USDI study red maple site.

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