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An inaugural dissertation, entitled, Observations on the structure and habits of the Lumbricus terrestris; and a chemico-physiological enquiry on its respiration. Submitted to the examination of the Rev. John Andrews, Vice-Provost, the trustees and medical faculty of the University of Pennsylvania, for the degree of Doctor of Medicine, on the twenty-first day of April, 1806

The formation of vegetable mould, through the action of worms with observations on their habits

The formation of vegetable mould through the action of worms : with observations on their habits

The formation of vegetable mould : through the action of worms, with observations on their habits

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