Try Amazon or any bookstore with a technical/engineering section. It is a very well known reference that has been around for years. The older versions are by Roark and Young, but it seems like Young had already passed away when my 5th edition was published. It is a real storehouse of design information.
I have a book given by an older engineer (retired now). Teng H. Hsu, Stress and Strain Data Handbook, 1986.
I never even opened it. Should I upgrade to Roark's?
Roark's is good for calculating stresses and deflections in plates and shells, as well as torsion & other various types of loadings. It has lots of tables with formulas for various loading and support conditions. Its' published by McGraw Hill and the sixth edition (1989) author is Warren C. Young. Raymond Jefferson Roark (1890-1966) is the original author. I use it occasionally. Its' worthwhile having.
Roark's is unique, as far as I know, in it's wealth of plate and shell formulas. Bagman, your endorsement sounded only semi-enthusiastic, perhaps you know another source?
I got an electronic version of Roark and Young on eBay for $7. Best seven bucks I've ever spent.
It's got great information on stress analysis and what I consider to be indispensible info on plates. I have used the plate formulas in my work, too, so the book paid for itself.
I first came across R&Y in school nearly 20 years ago. It was an expensive book, so I put off buying it (it was often cited in the FEA classes I took). I found a 1940's edition for about $10 just a few years ago. But I snobbishly thought "does this reflect anything Timoshenko did afterwards?" and I convinced myself not to buy that edition. Was I right? Doesn't matter...
