"extensive field research" is a correct and usable phrase in written English.
It can be used to refer to thorough and comprehensive research that takes place outside of a controlled laboratory or academic setting. Example: The scientists conducted extensive field research in the Amazon rainforest to study the biodiversity of the ecosystem.
Extensive field research now shows that businesses make some common mistakes when choosing, analyzing, and acting on their nonfinancial measures.
Charlie Harvey, professor of civil and environmental engineering, has conducted extensive field research on this issue.
Drawing on extensive field research, Weissbourd makes the case that parents, as models of behavior, must be vigilant about their own moral choices.
But after extensive field research (I took a shower in the girls' bathroom), I determined that the problem was more complicated.
The report is based on extensive field research into over 70 cases and interviews with more than 100 media workers in Pakistan.
The authors, Helen Merrell Lynd and Robert Staughton Lynd, who were married, were seeking a fairly typical American town in which to conduct extensive field research.
In a general sense, two lines can be distinguished within the extensive field of research on Corporate Social Responsibility in management.
Without extensive field biology research on this relatively unknown animal, there is no clear way to discover how to best help save it from extinction.
Resource consumption measurement, analysis, and improvement in the context of sustainability in manufacturing reveal extensive fields of research and have become important in order to fulfil multiple requirements in ecological, economic and legislative activities.
He has done extensive archival and field research in India as well as in Britain.
Charnysh's works combines statistical methods, including spatial and content analysis, with extensive field and archival research.
