1929 G. Heard i. 47 The first field-researchers, or rather collectors,..were compelled to inquire how the savage conceived the spiritual life.
1970 A. Ginsberg 26 Nov. (2008) 358 My ‘tips’..were drawn from Senatorial statement backed by..field researchers on the spot.
2005 L. Leblanc i. 25 Field researchers must therefore rely chiefly upon methods of nonprobability sampling.