Campbell, Norman Robert,  b. 1880 <br/><br/>
An account of the principles of measurement and calculation / 
by Norman Robert Campbell 
 - London :  Longman,  1928 
 - 293 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical measurements