The phrase "an extensive source of" is correct and usable in written English.
It can be used when referring to a large or comprehensive origin of information, materials, or resources.
Example: "The library serves as an extensive source of historical documents for researchers."
Alternatives: "a vast reservoir of" or "a rich supply of".
The IR Web site, http://www.uab.edu/graduate/roundtable/index.htm, provides an extensive source of information for graduate students.
These are the largest fires on Earth and an extensive source of greenhouse gases, but poorly understood, becoming an emerging research topic in climate-change mitigation.
The longer term plan is for Revue Discover to become an extensive source of newsletters, and Kuijper says the team are adding more titles to the directory but will always remain "picky".
We compared drug similarity through a 3D pharmacophoric approach and incorporated similarity data into an extensive source of targets provided by ChEMBL [36] to develop a multi drug-target predictor.
The plant kingdom is an extensive source of valuable compounds with a wide range of applications, most notably, in medicine.
Structural polysaccharides, as part of the lignocellulose and therefore the plant cell wall, represent an extensive source of fermentable carbohydrates [ 3].
Global road networks represent one of the most significant human impacts on ecosystems, and a spatially extensive source of anthropogenic disturbance and noise.
The depth range of hydrothermal plumes along the Kermadec Arc varies from 180 to 1800 m, implying that the arc represents a potentially extensive source of shallow vent fields expelling fluids into the Pacific (de Ronde et al., 2001).
Copy number variation (CNV) is a pervasive and extensive source of variation between individual genomes in humans and many other species.
Another extensive source of epitopes and antigens including neuraminidase of influenza A viruses is the immune epitope database (IEDB) [ 47] and the complete mapping of epitopes for the new H1N1 NA sequence is available at.
