System potassium oxide-pyrophosphoric acid-water at 0 and 25.deg.
1972 ◽
Vol 20
(1)
◽
pp. 146-150
◽
1965 ◽
Vol 10
(1)
◽
pp. 20-21
◽
1973 ◽
Vol 21
(4)
◽
pp. 700-704
◽
1981 ◽
Vol 29
(1)
◽
pp. 160-162
◽
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