The CRC Standard Mathematical Tables book was my bible in engineering, back before graphing calculators were a thing. https://www.amazon.com/Standard-Mathematical-Formulae-Advances-Mathematics/dp/1439835489 I ended up with 2 copies, one in my car, one at home. Another good reference to have
Keep this under your pillow, bought because of a recommendation from a PhD candidate and it hasn't left my side since as I work:
CRC Handbook
CRC Standard Mathematical Tables and Formulae, 32nd Edition (Advances in Applied Mathematics) https://www.amazon.com/dp/1439835489/ref=cm_sw_r_cp_api_glc_fabc_2qmcGb4ZV5DS4
I'm not sure if this is exactly what you want, but I think the CRC Handbook might be a good option.
Wonder no more. These things were as common as scientific calculators are now.
new 2011 32nd ed. $65
http://www.amazon.com/Standard-Mathematical-Formulae-Mathematics-Applications/dp/1439835489
used 27th ed. $2
http://www.amazon.com/Standard-Mathematical-Formulae-Mathematics-Applications/dp/0849306272
Lots of editions available, at basically every major bookseller, including amazon.
http://www.amazon.com/Standard-Mathematical-Formulae-Mathematics-Applications/dp/1439835489
CRC Tables is a must for anyone that may use math in their job. Also good for students. It has just about any formula or table you'd ever encounter in your math career.