Tinbergen, Niko; Falkus, Hugh <br/><br/>
Signals for survival 

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 - Clarendon Press, Oxford  1970 
 - 80 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal behaviour - Birds
<br/><br/><label>Dewey Class. No.: </label>591.598  TIN-S