Materials Research Symposium, 8th., Gaithersburg, Maryland, September 20-24, 1976. <br/><br/>
Methods and standards for environmental measurement 

 - Washington :   Department of Commerce,   1977. 
 - 692 p. 
 - National Bureau of Standars, Spe .
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONTAMINACION AMBIENTAL<br/>SANEAMIENTO AMBIENTAL<br/>HIGIENE DEL AIRE<br/>CONTAMINACION DEL AGUA
<br/><br/><label>Universal Decimal Class. No.: </label>628.5