https://catalogue-scientifique.canada.ca/record=4006257~S6*frc
Rechercher Grosvenor, G.M; Rechercher Garrett, W.E; Rechercher Darley, R.J; Rechercher Shupe, J.F; Rechercher Kohl, L; Rechercher Sweeny, M.A
National Geographic Magazine [February 1981]
Livre