Ch'ing-Hai upper Yellow River expedition : Rock and Simpson, 1925-1927 / [cartography by] J.F. Rock.
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Rock, Joseph Francis Charles, 1884-1962
http://n2t.net/ark:/99166/w69g5tbr (person)
Not only a botanist, plant collector, naturalist, and explorer, Joseph Rock was also a philologist, linguist, and anthropologist. Beginning in 1924 Rock explored northwest China and Tibet, collecting plant material for the Arnold Arboretum and ornithological specimens for Harvard's Museum of Comparative Zoology. On his 1924 expedition Rock collected 20,000 herbarium specimens and many packages of propagative material. Few new species were found but Rock lived up to Sargent's principal objective,...