scholarly journals SPECTROPHOTOMETRIC DETERMINATION OF SULPHATE AND NITRATE IN DRINKING WATER AT ASIA-PACIFIC INTERNATIONAL UNIVERSITY CAMPUS, MUAK LEK, THAILAND

2019 ◽  
Vol 12 (03) ◽  
pp. 1503-1508
Author(s):  
Anthoney Swamy Thangiah
1989 ◽  
Vol 5 (5) ◽  
pp. 601-604 ◽  
Author(s):  
Dong HUIRU ◽  
Yang SHOUZHEN ◽  
Liu JIALAI

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