植物
花楸(Sorbus Aria亚属)叶片、花朵、果实和树干的研究`Studies of the leaves, blossoms, fruits and trunk of a whitebeam (Sorbus subgenus Aria) (1788) by Ludwig Pfleger
植物
野生苹果树(Malus sylvestris)树干、花朵和果实的研究`Studies of the trunk, blossoms and fruit of a wild apple tree (Malus sylvestris) (1788) by Ludwig Pfleger
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