So is a subdistrict of Amphoe So Phisai.
No boundary for So yet
Nothing has been written about So here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show So Phisai as the capital of So. If that is wrong, tell us what it should be and where you read it.
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