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Both gypsum and phosphogypsum are forms of calcium sulfate and are soluble. Gypsum is used for reclaiming the sodic soil.
12, 24, 46, 78, 120, ?
21, 37, 73, 137, ?, 381
14, 20, ?, 50, 74, 104
0, 6, 24, ?, 120, 210
12, 14, 20, 32, ?, 82
64, 256, 128, 512, 256, ?
80, ?, 240, 80, 20, 4
60 61 57 66 ? 75 39
...257, 399, 566, ?, 983, 1237