1.   Archaeologists now use modern techniques such as aerial photography.

2.   They also keep their aircraft busy with training, rental, business charters, air ambulance flights, aerial photography and so on.

3.   The teacher may wish to introduce pupils to evidence from archaeology, and perhaps from aerial photography.

4.   Aerial photography is a technique that has revolutionised the study of archaelogy, leading to many new discoveries.

5.   The products of much of its observation work, including aerial photography, is also to be made available to researchers.

6.   Aerial photography helped free painters from the horizon line.

7.   Aerial photography, another mapping option, would cost five times that, ground survey crews even more.

8.   Having learned to fly to indulge his fascination with aerial photography, he eventually owned seven planes.

9.   He became a pilot, started his own aerial photography business and at one point built and flew his own plane.

10.   He next became a supervisor of unprecedented aerial photography missions in World War I.