I am a professor of Chemical Engineering with emphasis in chemical reactors and related subjects. I own this booh since 1977 (!) and it remains with me all the time. It is, for the time it was published, the best book ever written on Chemical Reactor Analysis. It has modeled the domain language, through its precision of definitions. It has also modeled the domain itself, through the precision of its mathematical language . I recommend it to every ungraduate and graduate student of Chemical Engineering.