Verhagen, J.H.G. <br/><br/>
distribution and population model of the mussel Mytilus Edu-lis in lake Greveliingen / J.H.G. Verhagen. 

 - Delft, [Holanda] : Delft Hydraulics Laboratory 
 - 11 p. 
 - Publication No. 279 / Delft Hydraulics Laboratory .