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81
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82
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83
Effects of nitrogen and phosphorus ratios on the productivity of brackishwater fishponds
Publicado em 1981Thesis -
84
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85
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86
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87
Population dynamics and production of Daphnia ambigua in a fish pond, Kansas
Publicado em 1980Livro -
88
Fishpond cooperators as communication links of improved fishpond practices [microform]
Publicado em 1980Visual Material -
89
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90