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4
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Tropical ecological systems : trends in terrestrial and aquatic research / ed. by Frank B. Golley and Ernesto Medina.
- Springer-Verlag,
- 1975.
- Berlin [etc.] :
-
Heterosis and hybrid rice breeding / Sant S. Virmani ; with a forew. by Klaus Lampe.
- Springer-Verlag,
- cop. 1994.
- Berlin [etc.] :
-
Concepts of applied ecology / Robert S. De Santo.
- Springer-Verlag,
- cop. 1978.
- New York, NY [etc.] :
-
Schistosoma Intercalatum-Infektionen in Afrika Saisonkrankheiten in Nigeria : Beitrage zur Geomedizin der Tropen / E. Hinz.
- Springer-Verlag,
- 1980.
- Berlin :