The phrase "a fruitful source" is correct and usable in written English.
It can be used to describe a source that provides valuable or productive information, ideas, or results.
Example: "The research paper proved to be a fruitful source of inspiration for my own work."
Alternatives: "a valuable resource" or "a productive source".
There are left three classes of bank borrowers: (a) Small or privately owned enterprises maybe good, maybe not; (b) Large industrial corporations with poor records even in the late prosperity; (c) Railroads and utilities needing temporary accommodation, to be paid off by permanent financing–a fruitful source of trouble for all concerned.
It should prove a fruitful source of revenue.
Forensic statistical research has been a fruitful source of leads in other sports.
The data collected from each of the production and customer divisions can be a fruitful source for failure analysis.
He thought of the evenings as amusement – enjoyable, pointless and a fruitful source of the dismissive jokes which he made, with relish, to his more politically engaged friends.
But Andersen, which said it was not consulted about the accounting in question, is hardly a fruitful source of potential recovery for any damages.
There are left three classes of bank borrowers: (a) Small or privately owned enterprises--maybe good, maybe not; (b) Large industrial corporations with poor records even in the late prosperity; (c) Railroads and utilities needing temporary accommodation, to be paid off by permanent financing--a fruitful source of trouble for all concerned.
Can there be a more fruitful source of dispute, or a kind of dispute more difficult to be settled?
Frost, for example, was hacked at least twice daily by Evans because, like Yentob, she was deemed a particularly fruitful source of stories and was on his so-called "back pocket list" of targets.
Marine sponges have been proven to be a particularly fruitful source of unusual terpenoids[1], [2].
Although the ICECOLD ERIC cohort(s) contain some information on treatment effects, we expect that the combined evidence from RCTs on COPD or good meta-analyses thereof may be a more fruitful source to see how predictions may be altered beneficially.
