CSS :: Sustained Yield Regulations
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Idea ws first enunciated by French forester de Liocourt in 1898 who said:
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[A]. |
In selection forest, the stem numbers fell off from lower to higher dia classes in a geometric progression | [B]. |
So there was a constant ratio between numbers in successive dia classes from lowest to the highest
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[C]. |
Both (a) & (b) | [D]. |
None of these |
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