by Richard J. Chorley | .
by R.G.Barry | .
by Morris Ginsberg | .
by D. Wilkie | .
by J. Koryta | J.Dvrak V.Bohackova.
by C. G. Johnson | .
by Konrad Lorenz | .
by K. Mather | .
by R. Dumont | .
by H. Speight | .
by Harold Entwistle | .
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