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Control plot no fertilizer addition to Douglas fir.
Control plot no fertilizer addition to Douglas fir. Razès.
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Norway spruce, 6 years from planting.
Norway spruce, 6 years from planting. Haute-Vienne, Limousin.
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Plantation of Douglas fir, general view and foresters taking pictures.
Plantation of Douglas fir, general view and foresters taking pictures. Razès.
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Processionary moth on Corsican pine.
Processionary moth on Corsican pine. Saint-Front, Dordogne.
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P. Voutilainen diving
Sports (Individuals): P. Voutilainen diving. Donor: P. Voutilainen.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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Potassium deficiency in Corsican pine.
Potassium deficiency in Corsican pine. Saint-Front, Dordogne.
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Norway spruce planted on large clearcut (coup a blanc).
Norway spruce planted on large clearcut (coup a blanc). Poitiers.
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