He received his first guitar at an early age, and initially concentrated on playing rock music.

He initially concentrated on playing as a goalkeeper for the school team.

The investigation was initially concentrated on trying the so-called third factor of the tragedy.

Work was initially concentrated on arch bridges, and only later extended to buildings.

It was founded by a retired air force officer and initially concentrated on charter flights.

It initially concentrated on theatre and the visual arts.

Each new financial futures exchange initially concentrates on local cash market instruments as a basis for its product range.

The second complexity comes from necessity of diluting sample, if it was initially concentrated.

Shoegaze was initially concentrated in England in the early 1990s.

Initially concentrated in the capital, Luanda, the disease has spread to three other cities within a radius of about 250 miles.