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19
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Africa, the devastated continent? : man's impact on the ecology of Africa / by Antoon de Vos.
- 86
- Junk,
- 1975.
- The Hague :
-
The population crisis and the use of world resources / ed. by Stuart Mudd ; ass. ed. Hugo Boyko...[et al.].
- Junk,
- 1964.
- The Hague :
-
Ecosystem research in South America / ed. by Paul Müller ; with contrib. by H. Lamprecht...[et al.].
- 878
- Junk,
- 1977.
- The Hague :
-
Insects as human food : a chapter of the ecology of man / by F.S. Bodenheimer.
- Junk,
- 1951.
- The Hague :
-
Saline irrigation for agriculture and forestry / ed. by Hugo Boyko.
- 846.2
- Junk,
- 1968.
- The Hague :
-
The Nile : biology of an ancient river / ed. by Julian Rzóska.
- 861.6
- Junk,
- 1976.
- The Hague :
-
Water plants of the world : a manual for the identification of the genera of freshwater macrophytes / Christopher D.K. Cook...[et al.].
- Junk,
- 1974.
- The Hague :
-
Salinity and aridity : new approaches to old problems / ed. by Hugo Boyko.
- Junk,
- 1966.
- The Hague :
-
Plants, man and the land in the Vilcanota valley of Peru / by Daniel W. Gade.
- 878.9
- Junk,
- 1975.
- The Hague :
-
Aquatic weeds in South East Asia : proceedings of a regional seminar on noxious aquatic vegetation, New Delhi, 12-17 December, 1973 / ed. by C.K. Varshney and J. Rzóska.
- 850.1
- Junk,
- 1976.
- The Hague :