Robert Lang Adams, a 25-year-old distantly descended from Paul Revere (though not the Adamses of Boston), wonders how he made honors in his first year at Harvard Business School. "I partied almost every night," he confesses. But he also netted $30,000 that year publishing student directories for Harvard, Wellesley and Simmons colleges. Then, after talking to school counselors ("Some of my best ideas come from other people," he admits), Adams set out to write and publish The Boston Job Bank, a 167-page paperback employment guide for recent college graduates. A year ago—four months before Adams received his master's—the reference book, listing more than 500 companies and contacts, came out in 200 Boston-area bookstores. So far he has sold more than 10,000 copies at $5.95 each. Last month his company, Bob Adams Inc., followed up with The Metropolitan New York Job Bank, which covers 2,060 companies in New York, New Jersey and Connecticut "whether they want to be included or not." By the end of the year he hopes to have Job Bank books in Philadelphia, Washington, L.A. and Chicago. A bachelor who enjoys skiing, sailboat racing and tennis, Adams now plans a novel based on his illustrious family. "All I need," he says, "is three or four weekends to write it." Who will publish it? Who else? Bob Adams.