She went on to earn a Ph.D. in international studies.

He went on to earn his Ph.D. there in 1939.

She worked while her husband earned his Ph.D. in psychology.

The professor said he had two students last year who earned Ph.D.'s in mathematics.

The council report showed a 13 percent increase in the number of blacks earning Ph.D.'s from 1989 to 1991.

For example, the average age of people earning their Ph.D.'s in life sciences is 32.

The study reported that 1,708 blacks earned Ph.D.'s in 2003, up from 925 two decades earlier, an 85 percent increase.

He earned a Ph.D. and started a brief career as a lawyer.

With his newly earned Ph.D., he began looking for jobs.

He continued to earn a Ph.D. in applied mathematics at the same institution.