31.   But some governors say the measure could permanently deprive cities and states of a valuable revenue source.

32.   But the White House, which is worried about the loss of a relatively painless revenue source, has not yet indicated whether it will support the bill.

33.   But the prospect of an entirely new revenue source, unfettered by the limitations of campaign contribution laws, has a lot of media consultants salivating.

34.   But with state and local governments faced with the prospects of more and deeper cuts to a widening variety of services, every potential revenue source must be explored.

35.   But Yamaichi is more dependent on these bread-and-butter brokerage revenue sources than Nomura, which has diversified more into investment management and overseas businesses.

36.   Car-rental companies rank second or third among airport revenue sources.

37.   Certificates of participation are considered more risky than general obligation or revenue bonds because they usually are backed by an annual appropriation rather than a defined revenue source.

38.   Customer demand and a desire to find new revenue sources as competition heats up are leading many ISPs to offer Web hosting services.

39.   Dealing with rising costs and finding revenue sources could take baseball in many directions, said Selig.

40.   Facing tougher competition from rival broadcasters, Televisa needs to diversify and increase the number of revenue sources to maintain its earnings growth, analysts said.