The classification of plants in the United States Patent Classification system
2000 ◽
Vol 22
(4)
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pp. 301-307
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2000 ◽
Vol 22
(3)
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pp. 123-133
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Keyword(s):
2002 ◽
Vol 24
(1)
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pp. 31-33
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Keyword(s):
2002 ◽
Vol 24
(2)
◽
pp. 111-117
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Keyword(s):
1912 ◽
Vol 4
(5)
◽
pp. 318-320
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