Lockwood, E H <br/><br/>
A revision arithmetic / 
E.H. Lockwood 
 - London:  Longmans, Green and Co.,  1930 
 - viii, 175 p.:  diagrs. ;  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>Dewey Class. No.: </label>511