17 books
1972 pub |196 pages
1973 pub |156 pages
1974 pub |150 pages
1975 pub |185 pages
1982 pub |192 pages
1983 pub |236 pages
1985 pub |232 pages
1988 pub |216 pages
1990 pub |176 pages
1993 pub |250 pages
1995 pub |320 pages
1996 pub |304 pages
1997 pub |256 pages
1998 pub |288 pages
1999 pub |375 pages
2000 pub |288 pages
2002 pub |294 pages