51.   It is the first study to quantify what many have long suspected -- the majority of ant invasions happen in rainstorms or droughts.

52.   It was unacceptable when the AAF published its first study a decade ago, and it remains unacceptable today.

53.   Massachusetts General Hospital cooperated with the first study as it was being carried out but declined to comment Wednesday on its results.

54.   Ministry officials have begun what they described as the first comprehensive study of the social and economic status of women in Haiti.

55.   Ms. Sylvester and Davidson of the American Bar Association have started the first comprehensive study on sexual activity between adult men and young girls.

56.   Nearly three out of every four men in Vietnam smoke, according to the first study to evaluate tobacco use in the country.

57.   Now, the first nationwide study of corporate participation in schools shows that by doing good, companies are also doing well.

58.   Now tourism officials are analyzing their first comprehensive study of off-season travel.

59.   One company, Amgen of Thousand Oaks, Calif., hopes to start the first human studies in a year.

60.   Palmer said upon first study of what he had done.