1.   Extensive field research can mean long periods living under adverse conditions to which the researcher is unaccustomed.

2.   His contribution lay firstly in his intensive field research, quite Novel by the standards of his time.

3.   Secondly, this list of headings conveys a quite false impression of how field research is conducted.

4.   The achievement of these aims imposed certain restrictions on the methods used during this stage of the field research.

5.   Where quantitative analysis requires mathematical and computer skills, area studies require language training and extensive field research.

6.   But little field research has been done on Asian pythons.

7.   Earthwatch, which recruits paying volunteers to aid scientific field research, offers some dinosaur-related possibilities.

8.   During the three years she delivered mail in and around Boulder, she viewed her route-walking as a form of field research.

9.   Experts conduct extensive field research on the finalists.

10.   Here is a theory that needs no field research.