SORB
发表于 2025-3-21 16:37:25
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Overthrow
发表于 2025-3-21 22:33:43
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哭得清醒了
发表于 2025-3-22 02:28:44
Palms,al explorations and descriptions — from the extraordinary difficulties in collecting them and making herbarium specimens. Felling a palm tree is always a hard task for a botanist; but without cutting a palm down for study of floral organs it may be impossible to determine the find correctly.
一大群
发表于 2025-3-22 06:46:09
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Accord
发表于 2025-3-22 11:01:27
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Choreography
发表于 2025-3-22 13:09:45
Some Neotropical Timber, ha of open woods are being destroyed. If this continues at its present rate, in a mere 20 years all will be over. For the year 1995 the world consumption of wood is forecast at 2,300,000 m. of industrially used trees. This is a 75% increase of the present demand (Catinto 1972, UNESCO/FAO Report no. 14,1978, Neil 1981, Bruenig 1972).
garrulous
发表于 2025-3-22 18:59:24
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Verify
发表于 2025-3-23 00:47:32
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AMOR
发表于 2025-3-23 03:58:29
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心神不宁
发表于 2025-3-23 09:08:55
Palms,ir economic importance for mankind is second only to the Gramineae. In the tropics, the palms provide many millions of inhabitants with nearly all the necessities for daily existence, i.e. basic food, clothes, wood, shelter, fibres, beverage, wax etc. According to Glassman (1972), 1439 palm species