June, 1993
Arizona Water Resources,
Joe Gelt
ed.,
vol.
2,
no.
4,
12
pp.,
Water Resources Research Center,
Tucson, AZ,
June, 1993
News stories tend to occur in clusters, with several stories about a particular topic suddenly appearing. For example, a number of news stories about fish recently surfaced. With six or seven at last count, the fish stories are running in a school.