510.023' 420 <br/> D 78 
<br/> Douglas Downing <br/>
          Barron's Algebra; The Easy Way. 4  edition 
  
 - 0 
.- Hauppauge,New York, USA.: Barron's, 2003
.- 392p., 
-ISBN  .: 0 
 <br/>  -  0 
<br/><br/><label>Source: </label> Худалдаж авсан 
<br/><br/><label>Тавиурын заалт: </label>510.023' 420  / D 78