51.   They have also failed to invest in research on better feedstuffs.

52.   Thirty years ago, a national commission chaired by Kenneth Ryan produced guidelines for research on living human fetuses.

53.   This paradox has prompted research on the potential contribution of varying infant care practices to the prevention of deaths from this syndrome.

54.   Watson did pioneering research on the long-term effects of dieting.

55.   Weiss is doing a follow-up study to his research on children raised in single-parent families.

56.   Research on the matter is far from conclusive.

57.   A new centre for research on toxic waste was inaugurated today at Imperial College.

58.   He blamed the failure of their research on poor methodology.

59.   There will always be those who will want to take an extra month or two to do further research on the shape of the roof on a new car.

60.   A subsequent subsection of this problem section is a review of past research on the topic being investigated.