The phrase "a valuable source of knowledge" is correct and usable in written English.
It can be used when referring to something that provides important or useful information or insights.
Example: "The library is a valuable source of knowledge for students conducting research."
Alternatives: "an important reservoir of information" or "a significant wellspring of insight."
This activity generates a valuable source of knowledge about the manufacturing processes in the company.
The icons and murals provide a valuable source of knowledge about the culture in which they were created: what was meant by good and evil, what was prophesied for the future, and what awaited in the afterlife.
The presence of anomalies in collected information, i.e. data that deviates substantially from what is normally expected, is a valuable source of knowledge and its discovery has many practical applications.
This article discusses the potential of satire as a valuable source of knowledge for historical research, specifically for understanding the Dutch Age of Revolution (c. 1780-1800).
Besides, the manual analysis of such texts, albeit time consuming, is a valuable source of knowledge representation on a certain language and, in this case, the study of relations between NEs in Portuguese would largely benefit from it.
We proved that the information encrypted in molecular formula of ionic liquid could be a valuable source of knowledge regarding the IL's viscosity, n-octanol water partition-octanol watersolubility and enthalpartitionion.
Or a valuable source of local knowledge?
McMaster tried to reassure the political appointees that the professional staffers weren't spies but, rather, a valuable source of institutional knowledge.
It provides a valuable source of relevant knowledge for researchers, planners and policy-makers.
Older people are widely recognised as being a valuable source of information, knowledge and experience.
Gene Ontology (GO) provides a valuable source of structured knowledge of protein functions [ 48] and has been widely used as a source of positive and negative samples to train classifiers [ 11, 62, 63].
