A simple intracranial needle guide for preventing backflow of injectant.

@article{Kottler1968ASI,
  title={A simple intracranial needle guide for preventing backflow of injectant.},
  author={P D Kottler and Rachel E. Bowman},
  journal={Journal of the experimental analysis of behavior},
  year={1968},
  volume={11 5},
  pages={536}
}