Quality assurance for environmental analysis  method evaluation within the measurements and testing programme (BCR) 
<label>;</label> Quevauviller, Ph. <label>;</label> Maier, E.A. <label>;</label> Griepink, B. 
 - Amsterdam  Elsevier  1995 
 - xx, 649p.  25 cm. 
<br/><br/><label>ISBN: </label>0444899553 
<br/><br/><label>Dewey Class. No.: </label>363.737  / QUA