Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'Elder, J.H', amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1
    Chimpanzee births in captivity : a typical case history and report of sixteen births
    Article de périodique

  2. 2
    The influence of amount of incentive on delayed response performances of chimpanzees
    Awduron Eraill: “...Elder, J.H...”
    Article de périodique