Engineer discussion

Hi /sci/ just got a job as a chemical engineer.

I was wanting to get pic related as a PDF and cannot for the life of me find a place to get it, any idea why?

Perry's has always served me well but i'd like the most updated edition.
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What sources do you use for calculations and problem solving on the job? My most difficult task has always been doing emission calculations for the many various situations. There are just too many fucking different ways a chemicals can release to the environment and each situation is a whole different set of formulas and calcs.