by Frank Smith
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Notes on species of North American Oligo...
The calciferous glands of Lumbricidae an...
An account of changes in the earthworm f...
Annelids, parasitic worms, Protozoans, e...
Distribution of the fresh-water sponges ...
A new North American oligochaete of the ...
The formation of vegetable mould, throug...
Into Science
The physiology of earthworms
Biology of earthworms
Earthworms
Geoökologische Untersuchungen zur Natur...