BORIC ACID-GELATINE METHOD FOR THE DETERMINATION OF SILICA IN THE PRESENCE OF FLUORINE
CHEN SSU-CHEN, TENG WEI-CHUN, WANG WEI-YIN, CHIEN TSUI-LIN, HSIEH TSING-CHENG
Acta Chimica Sinica . 1954, (2): 152 -154 .