puits (1) état (1) société (humaine) (1) dynamique sociale (1) recherche (1) projet (1) primates (1) attribution (1) besoin (1) plomb (1) analyse (1) évolution (1) point (1) Degrees (1) Implements (1) Nineteen sixties (1) Twentieth century (1) Tools (1) Thought and thinking (1) Social learning (1) Resemblance (Philosophy) (1) Research (1) Persons (1) Novelle (1) Nature (1) Must (1) Human beings (1) Life (1) Lead (1) Fifteenth century (1)