12 resultados para Pruebas de dureza
em University of Michigan
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Mode of access: Internet.
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Mode of access: Internet.
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Tesis Universidad Central, 1866.
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Certifica la copia Juan Francisco de Lastiri.
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Contiene : Tom. 1.
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Mode of access: Internet.
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Contiene : Tom. I - Tom. III.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Contiene : T. 1. -- T. 2.
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Areas of concern: This notification is based on information Illinois EPA has found while investigating, monitoring and working on two landfill sites in the Chicago Heights/South Chicago Heights area. Tests from groundwater and surface water at one landfill site showed levels of vinyl chloride greater than state Class I groundwater standards - the state standards that are designed to protect groundwater for use as drinking water. Vinyl chloride is from a family of chemicals known as volatile organic compounds (VOCs), which are common man-made chemicals found in cleaning solvents, gasoline and oil. These chemicals can travel in groundwater long distances from where they were spilled or dumped.