refseek.com
www.worldcat.org/
link.springer.com
http://bioline.org.br/
repec.org
science.gov
pdfdrive.com
Worldcat is my bestie and my one true love!! Not only does it tell you what library a book is at, but it also price compares different used book sites against each other for easy view! It's how I got Tarot For the Master for $10!!
Oh, and since I have your attention: z-library (books and textbooks) and sci-hub (gatekept scientific journal articles.) I just ripped a textbook for class off z-library and snatched a required reading from sci-hub. Life is good and education should be accessible at every stage and station of life.
information wants to be free
I remember when google was still relatively new, there was a competitor search engine that branded itself as saving you electricity by having black background rather than a white one. I think they maybe also donated like a fraction of a cent per search towards a charity of some kind. Does anyone remember what that was called?



















