Ossenbach, C. (2018). Orchids in the era of Grigory von Langsdorff: Two golden decades in the history of the botanical exploration of Brazil (1813–1830).

Ossenbach, Carlos. Orchids in the Era of Grigory Von Langsdorff: Two Golden Decades in the History of the Botanical Exploration of Brazil (1813–1830). 2018.

Ossenbach, Carlos. Orchids in the Era of Grigory Von Langsdorff: Two Golden Decades in the History of the Botanical Exploration of Brazil (1813–1830). 2018.