Nwankwo, Jerry N. <br/><br/>
A comparison of two methods for the analysis of nitrate in waters. 

 - Lusaka :  National Council for Scientific Research,  1978. 
 - National Council for Scientific Research, Zambia. Technical Report ;  44 National Council for Scientific Research, Zambia. Water Quality Research Report ;  WQ3 .
 - National Council for Scientific Research (Zambia). Technical report ;  National Council for Scientific Research (Zambia). Technical report ;  44. National Council for Scientific Research (Zambia). Water quality research report ;  National Council for Scientific Research (Zambia). Water quality research report ;  WQ3. .
<br/><br/>Bibliography: p. 6. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water -- Nitrogen content.--Water -- Nitrogen content.