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发表于 2025-3-28 16:31:41
Variation and classification of forestariation is relatively easy to recognise and explain. Even the earliest forest investigations, however, revealed the existence of differences from one part of the forest zone to another in the structure and floristic composition of mature high forest. It is with this kind of variation that this book
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发表于 2025-3-28 20:33:19
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发表于 2025-3-29 01:30:15
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