A review of two years' experience in providing extension courses in environmental control.

@article{Steele1961ARO,
  title={A review of two years' experience in providing extension courses in environmental control.},
  author={Rachel R. Steele},
  journal={Canadian journal of public health = Revue canadienne de sante publique},
  year={1961},
  volume={52},
  pages={
          437-9
        }
}