12 books
1963 pub |288 pages
1965 pub |192 pages
1975 pub |375 pages
1977 pub |480 pages
1980 pub |480 pages
1981 pub |375 pages
1982 pub |544 pages
1989 pub |608 pages
1990 pub |432 pages
1994 pub |480 pages
1997 pub |480 pages
2001 pub |351 pages