Hello
You can get all the subjects for PSEB for class 12 from http://www.pseb.ac.in/Class12
You can also download the e books from http://www.pseb.ac.in/ebooks
If none of the above mentioned options work you can also download the books from https://play.google.com/store/apps/details?id=punjabboard.books&hl=en_IN&gl=US
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