31.   The controversial U.N. secretary-general explains the U.N. efforts at ridding the world of the scourge of land mines.

32.   The global effort to rid the world of polio received a major boost Tuesday.

33.   The horrors of Auschwitz and Buchenwald made plain that it was imperative to rid the world of Hitler.

34.   The main proponent of the theory, Dr. Charles D. Bowman, is one of scores of scientists hunting for new ways to rid the world of surplus plutonium.

35.   The most important struggle in the war on terrorism might be to rid the world of religious fundamentalism.

36.   The president recognizes the epic and daunting nature of his quest to rid the world of evildoers.

37.   The president recognizes the epic nature of his quest to rid the world of evildoers.

38.   The urgency of ridding the world of polio is acutely felt in Angola, where new victims arrive daily at the Pediatric Hospital of Luanda.

39.   Then, in a chance encounter with their old tormenter, Tommy and John decide that they must rid the world of Nokes.

40.   They scatter wildflower seeds, aerate and fertilize soil, help rid the world of carrion, and, perhaps best of all, kill lots of irritating insects.