Cambridge natural history, Vol.02: Flatworms and mesozoa

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• Cambrigde natural history, Vol.02: Flatworms and mesozoa, Nemertines, Rotifers, Thread-worms, Sagitta, Gephyrea and phoronis, Earthworms and leeches, Polychaet worms, Polyzoa
  gan: Harmer, S F, Ed., Shipley, A E, Ed
  Cyhoeddwyd: (1968)
• Cambridge natural history: flatworms etc.
  gan: Harmer, S.F
  Cyhoeddwyd: (1970)
• Cambridge natural history, Vol.4
  gan: Harmer, Ed.; Shipley, Ed
• Cambridge natural history, Vol.09
  gan: Harmer, S F, Ed; Shipley, A E, Ed
  Cyhoeddwyd: (1959)
• Cambridge natural history, Vol.10: Mammalia
  gan: Harmer, S F, Ed.; Shipley, A E, Ed
  Cyhoeddwyd: (1968)