Some twentieth century problems
By: by William Trelease
Published: 1900
Language: eng
Number of pages: 15
Notes: Reprinted from Science, July 13, 1900, new series, v. 12, no. 289, p. 48-62.

"Address of the Vice-President, Chairman of Section G (Botany) of the American Association for the Advancement of Science, given at the New York meeting."