USGS Fact Sheet on Fertilizer
USGS Fact Sheet FS–155–99: Fertilizers - Sustaining Global Food Supplies
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Dec20 13
Last Modified: 2013-12-20 15:05:42
https://serc.carleton.edu/download/files/42818/usgs_fact_sheet_fertilizer.pdf
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- Student Materials
https://serc.carleton.edu/integrate/teaching_materials/mineral_resources/student_materials/index.html
Provenance
USGS Fact Sheet FS–155–99, published September 1999
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