Metrication manual / 
compiled by A. F .A. Harper and R. B. Digby ; edited by S. F. Thong and F. Lacey. 
 - London :  Commonwealth Science Council,  1978. 
 - 31 p. :  ill. ;  29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metric system--Handbooks, manuals, etc.