nidate (Ritalin), and
others (Cylert, Sanorex, Tenuate).

Infant mortality rate: The number of deaths to infants under one
year of age in a given year per l,000 live births occurring in the same
year.

Land use: Human use of the land surface is categorized as
arable land--land cultivated for crops that are replanted after
each harvest (wheat, maize, rice); permanent crops--land
cultivated for crops that are not replanted after each harvest
(citrus, coffee, rubber); meadows and pastures--land permanently
used for herbaceous forage crops; forest and woodland--land under
dense or open stands of trees; and other--any land type not
specifically mentioned above (urban areas, roads, desert). The
percentage figure for irrigated refers to the portion of the entire
amount of land area that is artificially supplied with water.

Leaders: The chief of state is the titular leader of the country
who represents the state at official and ceremonial funcions but is not
involved with the day-to-day activities of the government. The head
of government is the administrative leader who manages the day-to-day
activities of the government. In the UK, the monarch is the chief
of state and the prime minister is the head of government. In the US,
the President is both the chief of state and the head of government.

Life expectancy at birth: The average number of years to be lived
by a group of people all born in the same year, if mortality at each
age remains constant in the future.

Maritime claims: The proximity of neighboring states may prevent
some national claims from being fully extended.

Merchant marine: All ships engaged in the carriage of goods. All
commercial vessels (as opposed to all nonmilitary ships), which
excludes tugs, fishing vessels, offshore oil rigs, etc. Also, a
grouping of merchant ships by nationality or register.

Captive register--A register of ships maintained by a territory,
possession, or colony primarily or exclusively for the use of ships
owned in the parent country. Also referred to as an offshore register,
the offshore equivalent of an internal register. Ships on a captive
register will fly the same flag as the parent country, or a local
variant of it, but will be subject to the maritime laws and taxation
rules of the offshore territory. Although the nature of a captive
register makes it especially desirable for ships owned in the parent
country, just as in the internal register, the ships may also