by Ussr | .
by Chapman , A B | .
by Evertt, Lorne G | .
by Kinzerlbach, Wolfgang | .
by P. F. Fox | .
by G.S Campbell | .
by Alex G. Alexander | .
by A. Maton | J. Daelemans J. Lambrecht.
by Clare Robinson | .
by J. Hodgson | .
by John F. Stone | Wayne O. Willis.
by Barkai-Golan,Rivka.
by Mitchell W.A.
by Bhojwani, S,S.
by Arunachalam, V.
by Pietra, Francesca.
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