NBS/EPA standards ( Gaithersburg, 1980) <br/><br/>
Asbestos standards  materials and analytical methods 
ed. by John Small, Eric Steel 
 - Washington  U.S. department of commerce  1982 
 - vii, 212p. 
 - National bureau of standards special publication 619 .
<br/><br/><label>Dewey Class. No.: </label>620.195  / N82