Two other sources are becoming more productive of new talent.
And Shepherd is the least known but thus far the most productive of the group.
Stories like these are impressed upon the memory and their reading Is productive only of good.
Maxwell's time at King's was probably the most productive of his career.
These ten years were the most productive of the century.
The 1945 season was the most productive of Cline's college career.
It is productive of very real suffering for the person concerned.
Poor Ruby, indeed, is lost and gone, but his last words were productive of serious consequences.
"Those hours became the most productive of my entire career," she said.
For work which is directly productive of material wealth they will pay.