Methods used in the USSR for establishing biologically safe levels of toxic substances  papers presented at a WHO meeting heald in moscow from 12 to 19 December 1972 

 - Geneva  WHO  1975 
 - 171 p.  Illustration 
<br/><br/><label>ISBN: </label>9241560436 
<br/><br/><label>Dewey Class. No.: </label>363.77  / M27