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Appendix X-Report of the union plant pathologist and mycologist for the year 1911.
S. l. (Afrique du Sud), s.e., 1912 ; 207 x 330 mm, 10 pp. + 19 pl. hors-texte, doubles-feuilles agrafées. En langue anglaise. État moyen.
On the structure and life-history of diplodia natalensis N. SP.-the Cause of the «Black Rot» of Natal Citrus Fruit.
Pretoria, the Government Printing & Stationery Office, 1910 ; 156 x 246 mm, 18 pp. + 8 pl. hors-texte, broché. En langue anglaise. Transvaal Department of Agriculture – Science Bulletin No. 4. Bon état.
Bitter=pit of the apple.
Pretoria, the Government Printing & Stationery Office, 1909 ; 157 x 248 mm, 18 pp. + 5 pl. hors-texte, couverture et cahier agrafés. En langue anglaise. Transvaal Department of Agriculture – Technical Bulletin No. 1. Bon état.
