"I now pronounce you husband and wife." There are few phrases as sobering, with the possible exceptions of "We have lift-off" and "This country is at war." Yet, as they have done for centuries, millions of courageous men and women continue to walk down the aisle every year, without so much as a job description. Now, in her most autobiographical book, Erma Bombeck puts it all in loving and laughing perspective, as she looks back on her own 43-year-but-who's-counting marriage.