The phrase "a circular of" is correct and usable in written English.
It is typically used in formal contexts to refer to a circular letter or notice that is distributed to a group of people, often for informational or instructional purposes.
Example: "The organization issued a circular of new policies that all employees must follow."
Alternatives: "a notice of" or "a memorandum of".
In Belfast in 1792 there was an unprecedented gathering of Irish harpers, the aim of which, as it was described in a circular of the time, was to revive "the Ancient Music and Poetry of Ireland".
M.MONNERAY: I remind you of a circular of the Ministry of the Interior for Prussia and the Reich, of 8 May 1937, published in the Verordnungsblatt of 1937 of the Ministry of the Interior for the Reich and Prussia, Page 754, which stipulates in its third article that the police tasks at the frontier of the Reich are taken over by the Police commissariats and frontier offices.
But Galatea, a small satellite of Neptune, is ahead of schedule, observers reported this week in a circular of the International Astronomical Union--and no one knows why.
However, according to an 8 December report in a circular of the International Astronomical Union, the parent has hidden among its dusty offspring all along.
The genome of EAEC 042 consists of a circular chromosome of 5,241,977 bp and one plasmid pAA of 113,346 bp.
The genome of S. marinus F1 consists of a circular chromosome of 1.57 Mbp.
The assembled genome is composed of a circular chromosome of 1,635,045 bp and a circular plasmid of 37,174 bp (supplementary table S2, Supplementary Material online).
It consists of a circular chromosome of 2,895,264 bp and a plasmid (pLSEI1) of 29,061 bp (fig. 1).
Isolation of a circular derivative of yeast chromosome III: implication for the mechanism of mating type interconversion.
The simplest representation of the translation process has the form of a circular cascade of reactions [ 41] (see Fig. 2).
By 1807 Manhattan newspapers were advertising a show of "a circular view of New York".
