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3
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The manuring of sugar cane / by D.J. Halliday.
- Centre d'étude de l'Azote,
- [ca. 1956].
- Geneva :
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Progressive wheat production / [contrib. by F.C. Schlömer...et al.].
- Centre d'étude de l'Azote,
- [ca. 1960].
- Geneva :
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The manuring of coffee, cocoa, tea and tobacco / prep. by F.J.E. van Dierendonck.
- Centre d'étude de l'Azote,
- [ca. 1959].
- Geneva :