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/ B.Rudzka, J.Channell, Y.Putseys, P.Ostyn 
. - London  Basingstoke  : MacMillan, 1985
. - 230 p.  : ill.  ; 25 cm. 
<br/><br/>Index 
<br/><br/><label>ISBN: </label>0333360710 
<br/><br/><label>Source: </label> don britanique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0