The world of learning 1995. 

 - 45th ed. 
 - London :    Europa Publications limited ,    1994. 
 - xv, 2123 p. ;    28 cm. 
<br/><br/><label>ISBN: </label>1857430026 
<br/><br/><label>National Library of Medicine Call No.: </label>W19   /  W893 1994