Books by P. Viala:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Viala, P. (Pierre), 1859-1936: American vines (resistant stock) : their adaptation, culture, grafting and propagation ([s.n.], 1903), also by Edmund H. Twight, Raymond Dubois, and L. Ravaz (page images at HathiTrust)- Viala, P. (Pierre), 1859-1936: Le black rot et le Coniothyrium diplodiella (C. Coulet ;, 1888), also by L. Ravaz (page images at HathiTrust)
Find more by P. Viala at your library, or elsewhere.