n.a canoe made with the bark of a birch tree

同義詞：birchbark canoebirch bark

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Study Past Tense Verbs
Ontario birchbark.
A heliothis zea antifeedant from the abundant birchbark triterpene betulin.
A Heliothis zea antifeedant from the abundant birchbark triterpene Detulin. J. Agric. Food Chem. 38, 493-496
Colorado potato beetle antifeedants by simple modification of the birch bark triterpene betulin.
The birchbark house
The birchbark house