[Nikolaĭ Dmitrievich Stepanov].
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History, 19th Century↗
Biomedical subjects
P A Nechaev
Publications and source records attributed to P A Nechaev.
[In memory of S. I. Drachinskiĭ (on the 100th anniversary of his birth)].
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History, 19th Century↗
[On the etiology of papillomatosis].
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Animals↗