This is a preview. Log in through your library . Abstract 1 Root activity of coexisting plant species was assessed by injecting lithium, strontium and caesium at depths of 5 and 15 cm in the soil of ...
In the late 1960s and early 1970s, the American cartoonist Crockett Johnson created a series of paintings on mathematical subjects. They’re based on theorems, laws, and mathematical figures, but ...
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