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| Américas Magazine article on Kaieteur Falls, "Falling for Tourists" | |
| Geo Magazine Photo Essay on a BDG Plant collecting trip with H. David Clarke. Geo Wissen Nr. 25, Feb. 2000. Auf Deutsch. Photos Mattias Klum. Many thanks to author Johanna Wieland. | Native Orchids of Guyana Centerfold from Orchid Digest, Jan.-Feb.-Mar. 2000. Photos by H. David Clarke, Eric Christenson, and Marga Werkoven. Many Thanks to Eric Christenson. |
