["EDUCATION \/ General","Functional literacy;United States;Case studies.","Literacy;United States.","Volunteer workers in education;United States;Case studies.","EDUCATION \/ General","Education","Functional literacy;United States;Case studies.","GENERAL","General Adult","ILLITERACY AND LITERACY EDUCATION","Literacy;United States.","Non-Fiction","United States","Volunteer workers in education;United States;Case studies."]