The phrase "a precious source of" is correct and usable in written English.
It can be used to describe something valuable that provides information, inspiration, or resources.
Example: "The library is a precious source of knowledge for students and researchers alike."
Alternatives: "a valuable resource of" or "an invaluable wellspring of".
Developers' communication, as contained in emails, issue trackers, and forums, is a precious source of information to support the development process.
But since the draft applied only to American players, including those from Puerto Rico, an American territory and baseball powerhouse, the Dominican Republic quickly became a precious source of affordable talent.
The observation that several endogenous inhibitors of angiogenesis derive from the ECM proves its importance in physiological angiogenesis, and point to the ECM as a precious source of therapeutic agents for angiogenesis-driven diseases, including cancer growth and metastatic dissemination.
But if taking the animals off farms made a certain kind of economic sense, it made no ecological sense whatever: their waste, formerly regarded as a precious source of fertility on the farm, became a pollutant — factory farms are now one of America's biggest sources of pollution.
Referred to as kizuna in Japanese, these bonds are a precious source of much-needed comfort, support, and strength for all of us who were touched by the tragic events of March 11.
Sentinel General Practice network is a precious source of national clinical data about the last GP's consultation and GPs' management prior to suicide attempt in general practice.
Chevalley's article is a precious source from a contemporary mathematician on the topic of style.
These lakes are a good and precious source of clean and fresh water.
Developmental needs of households Now that the CBE programme is becoming well established, the RR will need to be prepared to help the households to cope with the emerging complications of the AI epidemic such as child malnutrition that is already affecting children in the infected governorates as a consequence of the loss of family income and the precious source of animal protein.
Few parents, grateful for this precious source of entertainment, are disposed to go all Jeremy Bentham about the transformation of London Zoo into an incoherent, money-grubbing theme park, with playgrounds, shows and carousel rides to stop people leaving after the primates and big cats.
