But the primary source for the sculpture's imagery was Dante's "Divine Comedy".
He identified the gland, near the base of the throat, as a primary source for the body's defense mechanisms.
What survives of them, two thousand years after Cleopatra's death, is still the primary source for biographers.
After being quoted in The Times, Mr. Zeltser became a primary source for others in the news media.
It has been my primary source for an understanding of the mind of the current leadership of the Islamic State.
A spokeswoman for Mr. Abraham said the primary source for the number was the statement issued by the reliability council.
The primary source for most of the arms was Bulgaria, the report said, although Bulgarian officials deny it.
Once upon a time, before "The Sopranos" broke the monopoly, PBS was America's primary source for prestige television.
It is land sales, the primary source for local government operations, that often prove most corrupting.
Are you aware of how the paper's role as a primary source for students has changed?
The primary source for the frescoes was the Book of Revelation, with additional input from learned and popular literature.
