Assen,Johannes van den <br/><br/>
Territory in the three-spined stickleback Gasterosteus Aculeatus  an experimntal study in intra-specific competition... 

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 - Leiden - HOLA  E.J.Brill  1967 
 - 164p.  24 cm 
 - Suplementode Tijdschrift Behaviour   v.(16) .
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