Van Lanen, Henny A. J. <br/><br/>
Monitoring for groundwater management in (semi- )arid regions :  a contribution to the international hydrological programme within project M.1-1b (IHP-IV) / 
Henny A. J. van Lanen. 
 - Paris :  Unesco,  c 1998. 
 - 224 p. :  ill. ;  30 cm. 
 - Studies and reports in hydrology  57. .
<br/><br/>42  42 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Water quality management<br/> Groundwater--Sampling.
<br/><br/><label>Dewey Class. No.: </label>553.79068 / L246m