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Author/Creator
- Northeastern Forest Experiment Station (Radnor, Pa.)3
- Commonwealth Agricultural Bureaux2
- Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)2
- American Orchid Society1
- American Orchid Society. Bulletin1
- Arbetz, K.1
- Bundesforschungsanstalt für Forst- und Holzwirtschaft (Germany)1
- C.A.B. International. Bureau of Crop Protection1
- C.A.B. International. Institute of Parasitology1
- Centro Nacional de Informação Documental Agrícola (Brazil)1
- Centrul de Documentare Tehnică pentru Economia Forestieră (Romania)1
- Committee on Fishery Literature1
- Commonwealth Bureau of Helminthology1
- Commonwealth Bureau of Soil Science1
- Commonwealth Bureau of Soils1
- Commonwealth Institute of Helminthology1
- Commonwealth Institute of Parasitology1
- Commonwealth Mycological Institute (Great Britain)1
- Drouin de Bouville, Raoul de, 1873-1
- École nationale des eaux et forêts (France). Station de recherches et expériences1