gefundene Verfasser Onumah, Edward E

Onumah, Edward E.
Brümmer, Bernhard
Hörstgen-Schwark, Gabriele

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  1. 1
    Productivity of hired and family labour and determinants of technical inefficiency in Ghana's fish farms

    Productivity of hired and family labour and determinants of technical inefficiency in Ghana's fish farms von Onumah, Edward E., Hörstgen-Schwark, Gabriele, Brümmer, Bernhard

    Veröffentlicht 2009
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  2. 2
    Effects of stocking density and photoperiod manipulation in relation to estradiol profile to enhance spawning activity in female Nile tilapia

    Effects of stocking density and photoperiod manipulation in relation to estradiol profile to enhance spawning activity in female Nile tilapia

    Veröffentlicht 2009
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