943 resultados para Grau GL
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Studies by optical microscopy, x-ray diffraction, and electron probe techniques of ferromanganese concretions from three Canadian lakes reveal chemical banding of amorphous hydrated iron and manganese oxides. The average ratio of iron to manganese in concretions from these lakes varies from 0.43 to 2.56. The concentrations of cobalt, nickel, copper, and lead are one to two orders of magnitude below those reported for oceanic ferromanganese concretions.
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National Highway Traffic Safety Administration, Washington, D.C.
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Title ornament; decorative initial; tail-pieces.
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Nuova e facile grammatica della lingua inglese per gl'italiani arricchita di frasologia e dialoghi /
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