ACSM technical papers: cleveland, Ohio, September 17-21, 1989 

 - Falls Church, Viginia  American Congress on Surveying and Mapping  1989 
 - v,188p.  23cm. 
<br/><br/><label>ISBN: </label>0-944426-59-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying
<br/><br/><label>LC Class. No.: </label>GY TA502.A47