Phosphorus as Crop Nutrient

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Phosphate Mining
intensifying drought is blowing more dust in the wind	web	Jim Robbins	Yale Environment 360	2017-11-30
mass-produced meat turning phosphorus into pollution	web	Dan Charles	NPR	2014-01-02
agriculture in a post-oil economy	web	Peter Goodchild	CounterCurrents	2007-09-22