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2. Experiments in recycling swine manure in fish ponds;Buck,1979
3. Organic fertilization;Pekár,1990
4. Summer yield of fish in polyculture in Transkei, South Africa, using pig manure with and without formulated feed;Prinsloo;S. Afr. J. Anim. Sci.,1986
5. The development of polyculture in Israel: A model of intensification;Sarig,1988