Some oil companies, though, cite studies that say the number is much lower.
He does not cite a single fact or study to support this.
He cited a study of 186 patients with acute back pain.
He cited a study that showed unemployment would reach 25 percent by 1993.
"The evidence is just building up," she said, citing animal studies.
The trade publication cited a study by Chrysler's financial staff.
Democrats will cite studies saying such cards produce small savings.
He cited studies showing that 55 percent of tobacco taxes are paid by people making less than $30,000 a year.
Even work that isn't in the career class is likely to bring self-esteem for both mother and child, she argues, citing studies.
Both supporters and critics of the programs have cited studies to support their arguments.