, and the World.
The front-of-the-book explanatory introduction expanded and retitled to
Notes, Definitions, and Abbreviations. Two new Appendices added:
Weights and Measures (in place of Conversion Factors) and a Cross-
Reference List of Geographic Names. Factbook size reaches 300 pages.

1989--Economy section completely revised and now includes an Overview
briefly describing a country's economy. New entries added under People,
Government, and Communications.

1990--The Government section revised and considerably expanded with
new entries.

1991--A new International Organizations and Groups appendix added.
Factbook size reaches 405 pages.

1992--Twenty new successor state entries replace those of the Soviet
Union and Yugoslavia . New countries are respectively: Armenia ,
Azerbaijan , Belarus , Estonia , Georgia , Kazakhstan , Kyrgyzstan ,
Latvia , Lithuania , Moldova , Russia , Tajikistan , Turkmenistan ,
Ukraine , Uzbekistan ; and Bosnia and Hercegovina , Croatia , Macedonia
, Serbia and Montenegro , Slovenia . Number of nations in the Factbook
rises to 188.

1993--Czechoslovakia 's split necessitates new Czech Republic and
Slovakia entries. New Eritrea entry added after it secedes from
Ethiopia . Substantial enhancements made to Geography section.

1994--Two new appendices address Selected International Environmental
Agreements. The gross domestic product (GDP) of most developing
countries changed to a purchasing power parity (PPP) basis rather than
an exchange rate basis. Factbook size up to 512 pages.

1995--The GDP of all countries now presented on a PPP basis. New
appendix lists estimates of GDP on an exchange rate basis.
Communications category split; Railroads, Highways, Inland waterways,
Pipelines, Merchant marine, and Airports entries now make up a new
Transportation category. The World Factbook is first produced on CD-
ROM.

1996--Maps accompanying each entry now present more detail. Flags also
introduced for nearly all entities. Various new entries appear under
Geography and Communications. Factbook abbreviations consolidated into
a new Appendix A. Two new appendices present a Cross-Reference List of
Country Data Codes and a Cross-Reference List of Hydrogeographic Data
Codes. Geographic coordinates added to Appendix H, Cross-Reference List
of Geographic Names. Factbook size expands by 95 pages in one year to
reach 652.

1997--A special edition for the CIA's 50 th anniversary. A schema or
Guide