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America's Resources in Nitrogen, Potash and Phosphorus
- Source :
- Economic Geography. 4:366
- Publication Year :
- 1928
- Publisher :
- JSTOR, 1928.
Details
- ISSN :
- 00130095
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Economic Geography
- Accession number :
- edsair.doi...........bb7ebfffa2dc4506ce405a1ba44d5281