Landslides  extent and economic significance proceedings of the 28th International Geological Congress  symposium on landslides, Washington, D.C. 17 July 1989 
edited by Earl E. Brabb and Betty L. Harrod 
 - Rotterdam :  A. A. Balkema,  1989. 
 - 385 p. : ill. ;  37 cm. 
<br/><br/><label>ISBN: </label>9061918766 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Landslides--Congresses.