# Soil gradation

> classification of coarse-grained soil that ranks the soil based on different particle sizes

**Wikidata**: [Q8215188](https://www.wikidata.org/wiki/Q8215188)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Soil_gradation)  
**Source**: https://4ort.xyz/entity/soil-gradation


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)