21.   They also said the vastness of computer networks, which recognize no international borders, would make close monitoring by a company or government agency virtually impossible.

22.   Who is to say, some Olympic officials wondered, that steroids are harmful if taken in regulated doses under careful monitoring by a doctor?

23.   Within those contradictions lies a tension that is always just below the surface and always the object of careful monitoring by the generals.

24.   Bovar has been told to deliver an analysis of air monitoring by the end of the week.

25.   But the Dutch maintain this open approach allows better monitoring by law enforcement authorities by keeping the trade out in the open.

26.   He had a telephone, modem-equipped computer, television, video-cassette recorder, exercise bike and around-the-clock monitoring by colleagues just outside the airtight door.

27.   Members of that group told reporters Thursday that they were afraid and asked for frequent monitoring by the UNHCR.

28.   Several members of that group told reporters Thursday they were afraid and asked for frequent monitoring by the U.N.

29.   Security measures range from simple monitoring by plainclothes guards or uniformed attendants in parking lots to sophisticated video surveillance.

30.   The case is being handled by the Sarajevo Supreme Court under close monitoring by the United Nations, Frieson said.