Not sure who the intended audience was for this book. It would seem to be for an advanced (young) ballplayer or a high school coach, but I have some difficulty thinking either group would find much of it new, though virtually anyone would likely find something they didn’t already know.
Modern analysis has rendered some, but hardly all, of the study obsolete, but the tactical discussions hold up. All-in-all, Mouch gets most things right, and offers generally good advice. But his analysis underestimates the cost of unsuccessful bunts, and overestimates the risks of the hit-and-run. But give the guy a break; the book dates from 80 years back.
But the book(let)’s just deadly dull. Difficult to recommend.