[Use of various psychopedagogical concepts in occupational training].

@article{Len1955UseOV,
  title={[Use of various psychopedagogical concepts in occupational training].},
  author={Alvaro Le{\'o}n},
  journal={L'annee psychologique},
  year={1955},
  volume={55 2},
  pages={349-59}
}