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Schutt Ellen Isham 1873-1955. "Pyrus Communis: Comice." ,

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Schutt Ellen Isham 1873-1955, S. Ellen Isham 1873-1955. (0000). Pyrus communis: Comice.

Chicago

Schutt Ellen Isham 1873-1955 "Pyrus communis: Comice" (1913):