W.F.J. Van Beers <br/><br/>
Some nomographs for the calculation of drain spacings 

 - Wageningen  International Institute for Land Reclamation and Improvement  1969 
 - 48p 
<br/><br/>W.F.J. Van Beers: Some nomographs for the calculation of drain spacings.  Wageningen.  International Institute for Land Reclamation and Improvement, 1969.--(631.6VAN)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.6  / IIL