sci-hub has already been mentioned, but I will say that though it is not piracy, depending on the field, you can find free version “pre-prints” of papers on arxiv.org and socarxiv.org
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sci-hub has already been mentioned, but I will say that though it is not piracy, depending on the field, you can find free version “pre-prints” of papers on arxiv.org and socarxiv.org