OPEC measures to strengthen cooperation between these countries... [The OPEC Special Fund's] resources are additional to those already made available by OPEC states through a number of bilateral and multilateral channels." The Fund became an official international development agency in May 1980 and was renamed the OPEC Fund for International Development (OFID), with Permanent Observer status at the United Nations. On 21 December 1975, Saudi Arabia's Ahmed Zaki Yamani, Iran's Jamshid Amuzegar, and the other OPEC oil ministers were taken hostage at their semi-annual conference in Vienna, Austria. The attack, which killed three non-ministers, was orchestrated by a six-person team led
The Cat in the Hat the cat manages to clean up the mess." In 1999, the United States Postal Service issued a stamp featuring the Cat in the Hat. "The Cat in the Hat"s popularity also led to increased popularity and exposure for Geisel's previous children's books. For example, 1940's "Horton Hatches the Egg" had sold 5,801 copies in its opening year and 1,645 the following year. In 1958, the year after the publication of "The Cat in the Hat", 27,643 copies of "Horton" were sold, and by 1960 the book had sold a total of over 200,000 copies. "The Cat in the Hat" has