Flatworms and mesozoa . Nemertines . Thread-worms and sagitta . Polychaet worms . Earthworms and leeches . Gephyrea and phoronis . Polyzoa /
Flatworms and mesozoa . Nemertines . Thread-worms and sagitta . Polychaet worms . Earthworms and leeches . Gephyrea and phoronis . Polyzoa /
by F. W. Gamble [et al.].
- London : Macmillan and co., 1896.
- XII, 560 p. : ill. ; 23 cm.
- The Cambridge natural history ; 2 .