Showing 1 - 2 results of 2 for search 'Elder, J.H', 查询时间: 0.01s Refine Results
  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
    其他作者: “...Elder, J.H...”
    Article de périodique