A shout out to Dover Publications
Dover Publications, also known as dover press. I first became aware of Dover when I was in college. Dover picked up the rights of old text books that had gone out of print, and packaged them as reasonable priced paperbacks. Since I studied physics, and much of the core material was pretty static (not the modern, high energy, or particle physics that were evolving rapidly, but mechanics, field theory, E&M, and others were quite relevant. Textbooks that had gone out of favor were often packaged for sale at very reasonable prices, as low as $6 up to the mid $20’s. Text books that if were being used would cost (even in the 1980’s) $40 – $100.
While I bought my required texts, I also picked up others on the same subject to give me additional points of view on topics. I primarily bought mathematics and physics texts.
Recently, I have found the need to brush up on some basic topics. The products I work on use PID digital controls. So I started looking for digital control books. Amazon had several, but they were current text books (read: $100 or more). Ouch. Hit dover’s website, and I find dozens of texts for less than $15 each. I pick one up.
When reviewing it, I realize I need to expand my knowledge of discrete mathematics, again, Dover to the rescue. A classic under grad text (and a companion volume on topology) are on the way to my house. Total cost $27.95.
Back in university, the internet wasn’t even on the horizon, so I would make the trek to Cody’s in Berkeley. They had a huge selection, ready to be exchanged for my hard earned cash. But today, it is a lot easier, you can buy them online, and browse their entire catalog.
Dover does have a lot more than just geeky science and physics books. There are books for all ages, and of a myriad of topics. I highly recommend a visit to their site.