Smedema, Lambert K <br/><br/>
Land drainage : planning and design of agricultural drainange systems 
Lambert K. Smedema and David W. Rycroft 
 - London  Batsford Academic and Education  c1983 
 - [10],376p.: figs. ; 23cm. 
<br/><br/><label>Dewey Class. No.: </label>631.62  / SME