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If you have suggestions, comments,tips or questions feel free to contact us using the contact form below. In case you are writing regarding a broken link, please also mention the list that the broken links was found on.

Please note that all the books featured on the website are direct links to pdf files hosted on other websites. In case you found a link that violates copyrights, please email us and the link will be removed.

Also, if you have a free science book, or a lecture course, that you would like to be featured on the website, feel free to send an email. The subjects we are interested in mostly are: physics, mathematics, astronomy also chemistry and biology. Your message will be answered ASAP.


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