1000 resultados para usnic acid

beta--Resorcylic Acid Lactones from a Paecilomyces Fungus

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The nitrogen form of nonhydrolyzable residue of humic acid

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Study on the forms of exchangeable aluminum in acid soil

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Infrarded spectra of humic acid-Zn and-Cd complexes in soil

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Phosphorus compounds in a long-term fertilized acid soil

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A new salicylate isfet for the determination of salicy lic and acetylsalicylic acid in drugs

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Acid-buffer capacity of ferralitic soils in south china

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Consequence of adsorption of sulfate by acid red soils

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Study on composition of exchang acidity in acid soils

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Nitrogen forms in synthetic humic acid using nitrogen-15 nuclear resonance technique

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Ammonia olatilization from urea applied to acid paddy soil in southern china and

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Factors affecting senstivity of variable charge soils to acid rain

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Agronomic potential of partially acidulated rock phosphates in acid soils of subtrophical china

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Environmental acid rain-in-duced problems in soil and groundwater and management strategies in China mainland

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The occurrence of mugineic acid in the rhizosphere soil of barley plant

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