The formation of vegetable mould, through the action of worms

Published by John Murray, London

 * The formation of vegetable mould, through the action of worms (1881)
 * The formation of vegetable mould, through the action of worms (1882)
 * The formation of vegetable mould, through the action of worms (1888)
 * The formation of vegetable mould, through the action of worms (1897)

Published by D. Appleton & Co., New York

 * The formation of vegetable mould, through the action of worms (1882), as Vol. XXXVII of The International Scientific Series
 * The formation of vegetable mould, through the action of worms (1888)
 * The formation of vegetable mould, through the action of worms (1890)
 * The formation of vegetable mould, through the action of worms (1896)