Douglas Jehl: Tiny Gulf Emirate May Have a 200-Year Supply. In: The New York Times. 23. Juli 1997, ISSN0362-4331 (nytimes.com [abgerufen am 7. Mai 2022]).
Douglas Jehl: Tiny Gulf Emirate May Have a 200-Year Supply. In: The New York Times. 23. Juli 1997, ISSN0362-4331 (nytimes.com [abgerufen am 7. Mai 2022]).