Twenty-fourth survey congress 'affordable modern technology systems for developing countries'. 

 - Port Moresby :  The Association,  1989. 
 - [In various foliations]. 
<br/><br/><label>LCCN: </label>55052283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveying--Papua New Guinea.<br/>Surveyors--Papua New Guinea.