Chances are you already saw the movie version of this. I mean in 1993 this was like the biggest movie of the year. In case you were under a rock back then, a billionaire creates a wildlife park that features cloned dinosaurs. He invites some scientists to check out the park--and also brings in his grandkids--and of course the dinosaurs run amok. The movie featured the T-Rex as the big baddie and the smaller Velociraptors as more mobile threats.
Like I said in my Beowulf entry, the book by Michael Crichton is probably better if you want more realism while the movie is better if you just want entertainment. Probably the biggest difference between the two is that Malcolm (Jeff Goldblum in the movie) is killed in the book. Which then it was awkward when Crichton wrote the sequel and had to bring him back to life by basically saying rumors of his death were exaggerated. (Ha, yeah right.) At the end of the book the army shows to rescue the people and destroy any remaining dinos, which was maybe alluded to in the second Jurassic Park movie, though maybe not. The book also had the flying dinosaurs, who weren't really in the movies until the 3rd one and then had a larger role in Jurassic World.
Something interesting is that even the book wasn't the first time Crichton had written about a theme park gone wild. In the 70s he wrote the movies Westworld (soon to be a series on Starz or Cinemax or one of those) and Futureworld. Those featured theme parks where robots ran amok, parodied in an episode of The Simpsons. So in large part Crichton actually updated his own story with dinosaurs and then it was updated again for the movies.