Experiments in the fertilization of Minnesota fish rearing ponds.
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| Format: | Texto biblioteca |
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1966
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| Subjects: | FISH PONDS, FERTILIZER APPLICATION, EXPERIMENTATION, FERTILIZERS, FISHES, FEED INDUSTRY, ETANG DE PISCICULTURE, FERTILISATION, ESTANQUES PISCICOLAS, APLICACION DE ABONOS, ENGRAIS, POISSON (ANIMAL), INDUSTRIE DE L'ALIMENTATION ANIMALE, EXPERIMENTACION, ABONOS, PECES, INDUSTRIA DE PIENSOS, |
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