Electron Paramagnetic Resonance of free radicals induced by X-ray in pyrene

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Effects of boron on some agroindustrial characteristics of two sugarcane varieties...

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Low yield in corn paoduction as a consequence of hedgind against risk to farmers...

Flow injection spectrophotometric determination of low concentrations of orthophosphate...

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Aplications of time division multiplex techniques to remote data concentration

Nutrient weed competition in upland rice crop. row spacing and nitrogen fertilization...