Poinsett, J. R. (1841). Discourse, on the objects and importance of the National Institution for the promotion of science: Established at Washington, 1840, delivered at the first anniversary. P. Force, Printer.
Dyfyniad Arddull ChicagoPoinsett, Joel Roberts. Discourse, on the Objects and Importance of the National Institution for the Promotion of Science: Established at Washington, 1840, Delivered at the First Anniversary. Washington: P. Force, Printer, 1841.
Dyfyniad MLAPoinsett, Joel Roberts. Discourse, on the Objects and Importance of the National Institution for the Promotion of Science: Established at Washington, 1840, Delivered at the First Anniversary. P. Force, Printer, 1841.
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