Rural technology in the Commonwealth :  a directory of organisations / 
compiled by Bruce Mackay 
 - 2nd ed. 
 - London :  Commonwealth Secretariat,  1980 
 - 128 p. ;  32 cm. 
<br/><br/> Rev. ed. of: Appropriate technology in the Commonwealth, 1977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology--Developing countries--Directories<br/>Appropriate technology--Directories