Die Spezialisation Der Alchimillen-Bewohnenden Sphaerotheca Humuli, DC, Burr (1908) (German Edition)
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On the occurrence and life history of Sphaerotheca lanestris, by Paul Lathrop Wilson ... 1921 [Leather Bound]
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Sphaerotheca
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Sphaerotheca Lump Multitude (Frogtro, Warn The Humans!!)
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![On the occurrence and life history of Sphaerotheca lanestris, by Paul Lathrop Wilson ... 1921 [Leather Bound]](https://m.media-amazon.com/images/I/31cHuTIM5ML._SL75_.jpg "On the occurrence and life history of Sphaerotheca lanestris, by Paul Lathrop Wilson ... 1921 [Leather Bound]")
