DARWIN ON HUMUS AND THE EARTHWORMS The Formation of Vegetable Mould through the Action of Worms with Observations on Their Habits.
Faber and Faber, 1948. New edn 3rd imp. 8vo. Original gilt lettered brown cloth (spine lettering faded and boards lightly discoloured at edges - otherwise VG), no dustwrapper. Pp. 153, illus with b&w drawings (endpapers toned and prelims lightly spotted; previous owner's inscription on front free endpaper). More








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