The botanist Asa Gray (1810-88) was important in unifying taxonomic knowledge of North American flora. The second volume of this 1889 two-volume selection edited by Charles Sprague Sargent (1841-1927) contains Gray's lesser-known essays on botanical topics and biographical sketches of influential naturalists, covering a period of forty-five years.
i.d.R. innert 7-14 Tagen versandfertig
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