It's been a while since I read the book, but the kids, Ellie, Grant, Gennaro, Muldoon and an injured Ian survive I believe... Hammond gets eaten by compies, Wu is mauled by a raptor, Ed Regis dies Gennaro's death and Nedrey and Arnold die pretty much like they did in the movies.
[In Spielberg’s film, only four main characters die – Gennaro, who gets eaten on the toilet, Muldoon, who’s killed by the velociraptors, Mr. Arnold, also killed by raptors, and Dennis Nedry, who’s killed by a
Dilophosaurus. That body count changes significantly in the book, however, both in how many people die, and which characters.
In addition to John Hammond, other characters who met their fate in the book ended up surviving in the movie, and vice versa. For instance, both Muldoon and Hammond’s lawyer Donald Gennaro both survive the events of the book. On the other hand, alongside Ray Arnold and Dennis Nerdy, Henry Wu (played by B.D. Wong in the films) also ends up as dino chow.
But perhaps the biggest character death is that of Ian Malcolm, who succumbs to injuries he sustained during his run in with a T-Rex. Considering that Jeff Goldblum’s performance as Malcolm has become a favorite among fans and movie buffs alike, we’re glad Steven Spielberg kept him alive to stammer another day.(
https://screenrant.com/jurassic-park-differences-book-movie/)]
I read another one that said Crichton resurrected Malcolm for "The Lost World" book but by the end of the first book. It is pretty well described that he is dead. That's pretty much how I remembered it for the most part. I haven't read "The Lost World" as of yet though.