Land subsidence=Affaissement du sol. 

 - [Paris] :  IASH-Unesco,  [1969?] 
 - 2 v. :  ill., maps. 
 - AIHS publication ;  no. 88-89 .
 - Publication ... de l'Association internationale d'hydrolo gie sceintifique ;vno. 88, etc. .
<br/><br/> Summaries in French. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources.<br/>Subsidences (Earth movements).<br/>Groundwater