PSTO
(redirected from Principal Sea Transport Officer)| Acronym | Definition |
|---|---|
| PSTO | Principal Sea Transport Officer (various locations) |
| PSTO | Potentials Spatial-Temporal Organization |
| PSTO | Probationary and Substitute Teachers Organization |
| PSTO | Pusat Studi Tumbuhan Obat (Indonesian: Center for Drug Plants) |
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