Four or five times a week, he would take a long walk on his own, especially after a period of heavy work.

It all felt like a period of work that's been quite complete.

There were two major periods of work on the book.

It was beyond his understanding why the work periods were not longer.

In 1984 he came to Italy for a short period of work only to remain up to the present.

In this later period of his work, he published ten more papers.

Did he ever fail to put in his scheduled work period every day?

From 1437 to 1613, the castle experienced a new period of work.

We have behind us a long period of very intensive cooperative work.

This began a period of missionary work which would continue for the next forty years.