Mechanical Engineering PE Exam - HVAC & Refrigeration

I'll summarize my concerns with this example from the book, specifically looking at the units of the solution:(lb/in^3)*(in^2)*(in) = psiMany of the solutions do not state which reference material information was pulled from, so I would suggest completing something like the Lindeburg reference manual before beginning this book to get a feel for it.The books list of exam day materials seems pretty comprehensive. I'll adjust this review after exam day to rate that specific component.