The excerpt is an example of this type of narration: Third-Person Narration.
Third-person narration is a form of narration that is marked by words like you, him, they, it, etc. We see that the author of the poem above used words that were indicative of the third-person narrative.
This can be seen in the sentence: "The yellow fog that rubs its back upon the window-panes."
Learn more about the types of narration here:
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