Ammonia in waters 1981 :  methods for the examination of waters and associated materials 

 - London :  Her Majesty's Stationary Office,  1981 
 - 47 p. ;  27 cm. 
<br/><br/><label>ISBN: </label>0117516139 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Analysis