El presente texto es el resultado de la labor conjunta de dos equipos de investigación de la Facultad de Ciencias Naturales y Museo de la Universidad Nacional de La Plata, que vienen desarrollando estudios arqueológicos (Laboratorio de de Análisis
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Obras de Robert Burns – Wikipédia, a enciclopédia livre
Compounds of formula (I) are suitable for use as herbicides: wherein R is methyl, ethyl, vinyl, ethynyl or cyclopropyl, R1 is hydrogen, C1-C6alkyl, C1-C6haloalkyl, C3-C7cycloalkyl, C1-C6alkoxy, C1-C6haloalkoxy, vinyl, propenyl, ethynyl, propynyl, halogen, or optionally substituted phenyl, R2 is methyl, ethyl, vinyl, ethynyl or methoxy, R3 and ...
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