Other surveys, he said, counted and reported single symptoms.

The survey counts only victims over the age of 12.

The group's survey last April counted 500 industrial firms, a 25 percent rise since 1997, and 3,000 employees.

A recent survey counted only 14-21 of these big cats.

By comparison, a 1992 survey counted 955,000 people who said they had returned in the previous five years.

An informal survey counted only 19 trees, many of them little more than saplings.

The survey counted 65 deer just at that site.

A 2004 survey counted 188 adults, 35 seedlings, and 36 dead plants.

As of last fall, the survey counted 27.5 million E-mail users.

The numbers are considered estimates because aerial surveys cannot count seals in the water.