OAPEC Organization of Arab Petroleum Exporting Countries
OAS Organization of American States
OAU Organization of African Unity
OCAM Afro-Malagasy and Mauritian Common Organization
ODECA Organization of Central American States
OECD Organization for Economic Cooperation and Development
OECS Organization of Eastern Caribbean States
OIC Organization of the Islamic Conference
OMVS Organization for the Development of the Senegal River Valley
OPANAL Agency for the Prohibition of Nuclear Weapons in Latin America
and the Caribbean
OPEC Organization of Petroleum Exporting Countries

PAHO Pan American Health Organization
PCA Permanent Court of Arbitration

SAARC South Asian Association for Regional Cooperation
SADCC Southern African Development Coordination Conference
SC Security Council (UN)
SELA Latin American Economic System
SPC South Pacific Commission
SPEC South Pacific Bureau for Economic Cooperation
SPF South Pacific Forum

TC Trusteeship Council (UN)
TDB Trade and Development Board (UN)

UDEAC Central African Customs and Economic Union
UEAC Union of Central African States
UN United Nations
UNCTAD UN Conference on Trade and Development
UNDP UN Development Program
UNESCO UN Educational, Scientific, and Cultural Organization
UNHCR UN High Commissioner for Refugees
UNICEF UN Children's Fund
UNIDO UN Industrial Development Organization
UPEB Union of Banana Exporting Countries
UPU Universal Postal Union (UN)

WCL World Confederation of Labor
WEU Western European Union
WFC World Food Council (UN)
WFTU World Federation of Trade Unions
WHO World Health Organization (UN)
WIPO World Intellectual Property Organization (UN)
WMO World Meteorological Organization (UN)
WP Warsaw Pact
WPC World Peace Council
WSG International Wool Study Group
WTO World Tourism Organization
——————————————————————————
Appendix C: Country Membership in International Organizations

This information is currently available only as a table in the printed version of The World Factbook 1990. For the 1991 edition a new textual format will be adopted that will greatly expand the breadth and depth of coverage to include many more organizations with complete name, acronym or abbreviation, date established, aim, and list of members. —————————————————————————— Appendix D: Weights and Measures

Mathematical Notation

Mathematical Power Name 10 +18 or 1,000,000,000,000,000,000 one quintillion 10 +15 or 1,000,000,000,000,000 one quadrillion 10 +12 or 1,000,000,000,000 one trillion 10 +9 or 1,000,000,000 one billion 10 +6 or 1,000,000 one million 10 +3 or 1,000 one thousand 10 +2 or 100 one hundred 10 +1 or 10 ten 10 +0 or 1 one 10 -1 or 0.1 one tenth 10 -2 or 0.01 one hundredth 10 -3 or 0.001 one thousandth 10 -6 or 0.000 001 one millionth 10 -9 or 0.000 000 001 one billionth 10 -12 or 0.000 000 000 001 one trillionth 10 -15 or 0.000 000 000 000 001 one quadrillionth 10 -18 or 0.000 000 000 000 000 001 one quintillionth

Conversions from a multiple or submultiple to the basic units of meters, liters, or grams can be done using the table. For example, to convert from kilometers to meters, multiply by 1,000 (9.26 kilometers equals 9,260 meters) or to convert from meters to kilometers, multiply by 0.001 (9,260 meters equals 9.26 kilometers) Length, weight, Prefix Symbol capacity Area Volume ——— ——— ———— ——— ———- exa E 10 +18 10 +36 10 +54 peta P 10 +15 10 +30 10 +45 tera T 10 +12 10 +24 10 +36 giga G 10 +9 10 +18 10 +27 mega M 10 +6 10 +12 10 +18 hectokilo hk 10 +5 10 +10 10 +15 myria ma 10 +4 10 +8 10 +12 kilo k 10 +3 10 +6 10 +9 hecto h 10 +2 10 +4 10 +6 deka da 10 +1 10 +2 10 +3 basic unit - 1 meter, 1 meter2 1 meter3 1 gram, 1 liter deci d 10 -1 10 -2 10 -3 centi c 10 -2 10 -4 10 -6 milli m 10 -3 10 -6 10 -9 decimilli dm 10 -4 10 -8 10 -12 centimilli cm 10 -5 10 -10 10 -15 micro u 10 -6 10 -12 10 -18 nano n 10 -9 10 -18 10 -27 pico p 10 -12 10 -24 10 -36 femto f 10 -15 10 -30 10 -45 atto a 10 -18 10 -36 10 -54