La Bayette owed its survival only to its practical usefulness, for it gave the time.

This neglect of normative theories "limits the practical usefulness of communication studies."

Second, the vast majority of participants were able to indicate the practical, as distinct from abstract, usefulness of the course.

The knife he carried, for its practical usefulness had been readily apparent to him from the first.

Despite some problems of reliability, the Br.690 showed a practical usefulness that the Breda never achieved.

After this peak value necking complicates the analysis and it is of no practical usefulness.

The extremely short distances over which such systems worked prevented them from having any practical usefulness.

Mr. Gingrich said: "The conversation was entirely one-sided and had nothing of practical usefulness."

Mail remained in use as a decorative and possibly high-status symbol with military overtones long after its practical usefulness had passed.

These are not faults that affect the book's practical usefulness.