... 栓皮酸 corticinic acid 栓皮械 field maple 栓皮榆 cork elm ...
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Snow field and maple forest 雪原如海
Michael Farrell, director of Cornell's Uihlein Sugar Maple Research and Extension Field Station, also sees a big opportunity for northeastern maple producers.
WSJ: Birch syrup explored as add-on to maple industry
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