Cotsworth, M. B.  <br/><br/>
Cotsworth's direct calculator   series 0 
M. B. Cotsworth 
 - London  McCorquodale  1903 
 - 337p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Universal Decimal Class. No.: </label>519.672  / COT