Her early books concentrated on providing information to women who wished to have safe, non-interventionist births.

His books concentrated on the life of ancient Mediterranean nations.

His book therefore concentrates heavily on the military aspects of Alexander's life.

Levertov's first two books had concentrated on traditional forms and language.

Rosenthal argues that the book concentrates on the "here and now."

Her book concentrates on the mass incarceration of African-American men.

Polish critics contended the book did not sufficiently concentrate on the question of securing food from local population.

This book has concentrated on the political and social values of Africa today, and traced their evolution over more than a century.

Most other books concentrate on a smaller number of specific accidents, described in more detail.

The book concentrates on the narrative of the television series.