Philippine Standard Time:
Classes under Group 421
| Class Description | Class Code |
|---|---|
| Construction of roads and railways |
4210 |
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Publication
Other Classification Systems
- 2017 Philippine Standard Classification of Education (PSCED)
- 2002 Philippine Central Product Classification (PCPC)
- Philippine Standard Geographic Code (PSGC)
- 2019 Updates to the 2009 Philippine Standard Industrial Classification (PSIC)
- 2012 Philippine Standard Occupational Classification (PSOC)
- 2018 Philippine Standard Classification of Crime for Statistical Purposes (PSCCS)