National Geographic sells uncirculated back issues, so used back issues are very nearly worthless unless they're VERY old (prior to, say, 1900 or so).
The complete collection of every issue EVER is available on DVD for $50.
Some of the most valuable National Geographic issues include the first ever issue published in 1888, issues featuring iconic covers or stories (such as the Afghan Girl or Titanic), and rare editions with limited print runs or historic significance. Issues in mint condition, with intact maps and inserts, are also highly sought after by collectors.
The ones that are worth the most
October, 1915
June, 2004 issue: "The End Of Cheap Oil"
Most academic and public libraries should have a complete collection of National Geographic magazines. In addition, the National Geographic Society’s own library in Washington, D.C. will likely have the most comprehensive collection. Library databases or online archives may also provide access to digital copies of past issues.
Cuban National Series Most Valuable Player Award was created in 1962.
the old ones that aren't sold anymore are the most valuable.
National Geographic Specials
National Geographic's Most Incredible Photos Afghan Warrior - 2009 TV was released on: USA: 22 December 2009
This question of the length of running the National Geographic photo of the day contest is pretty difficult to answer, as the previous pages of the National Geographic webpage are not easily found. Most likely the contest runs since the early 2000's.
The Philippines faces several issues on a national level. Most importantly, the country faces economic, political, and health related issues.
National Geographic Explorer - 1985 World's Most Dangerous Gang 20-9 was released on: UK: 2005 USA: 12 February 2006
The most valuable issues of Hustler magazine are typically the early ones from the 1970s, featuring iconic covers and content. Some of the top 10 most valuable issues include the first issue from 1974, the ones featuring celebrities like Vanessa Williams or Traci Lords, and issues with controversial or rare content. The value of these magazines can vary based on condition and demand from collectors.
National Geographic says 812,000, and the national population figure they give matches those available from most other sites.
The lowest price for a magazine subscription to National Geographic varies depending on current promotions and offers. It is recommended to visit the National Geographic website or contact their customer service for the most up-to-date pricing information.