social studies
new york: pocket books, 1982. first edition. mass market paperback.
new york: pocket books, 1982. first edition. mass market paperback.
new york: berkley medallion books, 1967. massnmarket paperback. paperback.
new york: signet, 1975. 1st paberback, mass market paper back. paperback.
new york: ace books, 1970.