Though she never received a formal degree in anthropology, she conducted extensive fieldwork among the !

He is known particularly for his work in historical linguistics and for his extensive fieldwork.

So I'm thinking he doesn't do extensive fieldwork.

An academic day at Shoals consists of laboratory and classroom time, combined with extensive fieldwork.

Apparently the woman is a historian who maps old walkways and often does extensive fieldwork, sometimes in dense forest.

His research has been multidisciplinary and has involved extensive fieldwork in the Balkans.

He has engaged in extensive fieldwork around the world, usually collecting mollusks, especially freshwater and terrestrial species.

Cole worked for the British Museum, and conducted extensive fieldwork in Africa.

Few people have been allowed to do any extensive fieldwork.

Between 1960 and 1976 he conducted extensive fieldwork on several severely endangered languages.