See what's new with book lending at the Internet Archive. Uploaded by rpls on July 16, Search icon An illustration of a magnifying glass. User icon An illustration of a person's head and chest. Sign up Log in.
Join the journal on Facebook. All the submitted manuscripts are checked by the CrossRef Similarity Check. All content is made freely available for non-commercial purposes, users are allowed to copy and redistribute the material, transform, and build upon the material as long as they cite the source. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
PDFEncrypt is a free, open-source native app that allows you to password protect encrypt PDF files for free, without purchasing expensive software. Download Installer without. Complete source code is available on GitHub, and you can download the installer for Windows 7, 8 and 10 below.