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J. F. de L. G. Solbe, Aspects of the Biology of the Lumbricids Eiseniella tetraedra (Savigny) and Dendrobaena rubida (Savigny) F. subrubicunda (Eisen) in a Percolating Filter, Journal of Applied Ecology, Vol. 8, No. 3 (Dec., 1971), pp. 845-867
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J.F. de L.G. Solbé (1971) studied this question.
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