Oswagwu U.M <br/><br/>
The mole concept in chemistry / 
by Ben U.M Osuagwu 
 - Lagos  Foundation Publications  1985 
 - 127p.   Hbk 
<br/><br/><label>ISBN: </label>9781990023 
<br/><br/><label>LC Class. No.: </label>QD72.08