GARDEN STATE by JULIAN MOYNAHAN 282 pages. Little, Brown. $6.95.
In his mid-40s, Howard Butler has acquired the anti-hero's stock repertory of problems: dissolving marriage, dead-end advertising job in New York, rebellious teen-age daughter, losing bouts with the bottle. So he deserts his wife and exurban New Jersey home to run a tree nursery on a nearby ten acres.
Enter Watchung Pharmaceutical, an expanding drug firm that lusts after Howard's turf as well as 250 acres of prime undeveloped land adjoining it. A tiny zoning change will make the propertya potential community parkeligible for commercial development, and Watchung has the town's most influential...