@base . a ; . a . [ ] . a ; "0027-9358" ; . a , ; "National geographic (Print)" . "District of Columbia" . a ; "20231009064345.151200"^^ ; ; . , ; "National geographic." ; , ; ; "1536-6596" ; ; , ; ; ; "National geographic (Print)" , "National geographic." ; ; "http://magma.nationalgeographic.com/ngm/data/html/home_refresh.html" . .