* Eric Warner Johnson, an influential Quaker teacher and the author of 57 books, died Thursday at age 76 from head injuries sustained in a fall. Mr. Johnson, a former teacher and administrator at Germantown Friends School in Philadelphia, wrote books aimed at helping young people and their parents deal with sex, family problems and growing up, including "How to Live Through Junior High School." A conscientious objector in World War II, Mr. Johnson helped to resettle refugees through the American Friends Service Committee in Portugal and North Africa, and later worked for famine relief in India.