21.   It can therefore be a valuable aid to the better understanding and management of what is inevitably a very complex process.

22.   It is a personal activity at best, an aid to the individual teacher, the individual child and the parents.

23.   It was an effort to roll back federal aid to the poor across a much broader front.

24.   Lemon involved two appeals about the constitutionality of Pennsylvania and Rhode Island statutes providing state aid to church-related schools.

25.   Nor was government aid to the landlord restricted to armed assistance.

26.   Public aid to the needy and even public sanitation tended to perpetuate the more vulnerable members of the race.

27.   Reagan was forced to announce that he was withdrawing his requests for additional military aid to El Salvador until after the elections.

28.   So did Dulles, who promised economic aid to those who broke with the Kremlin.

29.   Solar and lunar eclipses, however, occurred far too rarely to provide any meaningful aid to navigation.

30.   The bill would have cut off government aid even to legal immigrants.