1. C Andersen (1980) The influence of farmyard manure and slurry on the earthworm population (Lumbricidae) in arable soil. In Soil Biology as Related to Land use Practices (ed. D. L. Dindal), Proc. VIIth Int. Soil Zool. Coli., EPA Washington DC, pp. 325–334.
2. PJ Bolton and J Phillipson (1976)Burrowing, feeding, egestion and energy budgets of Allolobophora rose a (Savigny) (Lumbricidae)Oecologia(Berl.) 23 225–245
3. JB Byzova (1965)Comparative rate of respiration in some earthworms (Lumbricidae, Oligochaeta)Rev. Ecol. Biol. Sol.2207–216
4. DA Crossley DE Reichle and CA Edwards (1971)Intake and turnover of radioactive cesium by earthworms (Lumbricidae)PedobiologiaII71–76
5. LV Heilbrunn (1947) An Outline on General Physiology. 2nd edn., Saunders, Philadelphia and London. 184 pp.