Author:
Boag B.,Yeates G.W.,Johns P.M.
Reference71 articles.
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4. British planarians, Platyhelminthes: Tricladida, Keys and notes for the identification of the species.;Ball,1981
5. The taxonomy, habitat and distribution of the freshwater triclad Planaria torva (Platyhelminthes: Turbellaria) in Britain.;Ball;J. Zool., London,1969