Appropriate technologies in civil engineering works in developing countries  an exploratory appraisal of the state of the art 
Department of Economic and Social Affairs 
 - New York  United Nations  1976 
 - vii, 64 p.  24 cm. 
 - [Document] - United Nations  ST/ESA/37 .
 - United Nations  Document  ST/ESA/37 .
<br/><br/> "United Nations publication. Sales no. E.76.II.A.2." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developing countries--Public works
<br/><br/><label>Dewey Class. No.: </label>338.4  / 7  / 624091724