Who knows which university library can provide free resources for free?
The digital library of university is relatively small in scale, and it feels like an auxiliary tool of the library, which is inconvenient to use. You'd better go to the university library if you can.
It doesn't matter if there are no conditions. I often look up books online and visit this website:
National Library of China National Digital Library
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Absolutely convenient, you can simply query and browse online.