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Smulders A F
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Un procedimiento para destruir los gérmenes que vician las sustancias vegetales, preparadas, valiéndose para ello del calor, por medio del aparato que se describe.
Un procedimiento para el tratamiento completo de la primera materia petróleo crudo, según sale de los pozos de las cuencas petrolíferas, para obtener todos los productos que se derivan de los tratamientos modernos del petróleo crudo natural, por medio de